Rearranging Formulas
 Hint 1: Get rid of the -2 on the right-hand sideRearrange the formula to make x the subject:to have x on its own. You can do it by adding2 to both sides of the formula or by moving-2 from right-hand side to left-hand side(Remember to change the - sign to +)y = x - 2 x = y + 2y = x - 2y + 2 = x+2+2We made x the subjectAdd 2 to both sidesSwap sides Hint 1: Get rid of the -4 on the right-hand sideRearrange the formula to make x the subject:to have x on its own. You can do it by adding4 to both sides of the formula or by moving-4 from right-hand side to left-hand side(Remember to change the - sign to +)p = x - 4 x = p + 4p = x - 4p + 4 = x+4+4We made x the subjectAdd 4 to both sidesSwap sides Hint 1: Get rid of the -3 on the right-hand sideRearrange the formula to make x the subject:to have x on its own. You can do it by adding3 to both sides of the formula or by moving-3 from right-hand side to left-hand side(Remember to change the - sign to +)2m = x - 3 2m + 3 = xx = 2m + 32m = x - 3+3+3We made x the subjectAdd 3 to both sidesSwap sides Hint 1: Get rid of the 2 on the right-hand sideRearrange the formula to make x the subject:to have x on its own. You can do it by taking2 away from both sides or by moving +2 from right-hand side to left-hand side(Remember to change the + sign to -)3t + 3 = x + 2 3t + 3 = x + 23t + 1 = xx = 3t + 1-2-2We made x the subjectTake away 2from both sidesSwap sides Hint 1: First we have to have the 3x and x term             on one side of the formula. We can do it              by taking x away from both sides or              by moving the x term from righ-hand side              to left-hand side.           (Remember to change the + sign to -)Rearrange the formula to make x the subject:2x + 3y = x + 4 2x + 3y = x + 4x + 3y = 4x = 4 - 3y-x-3y-3y-xWe made x the subjectTake away 3y from both sides to make 2x on its ownTake away xfrom both sides Hint 1: Because the x is multiplied by 3 here in order             to make x the subject we have to divide both             sides of the formula by 3.Rearrange the formula to make x the subject: y = 3x y/3 = xx = y/3÷3y = 3x÷3Divide both sides by 3We made x the subjectSwap sides Hint 1: Because the x is multiplied by 5 here in order             to make x the subject we have to divide both             sides of the formula by 5.Rearrange the formula to make x the subject: m = 5x m/5 = xx = m/5÷5m = 5x÷5Divide both sides by 5We made x the subjectSwap sides Hint 1: Because the x is multiplied by 3 here in order             to make x the subject we have to divide both             sides of the formula by 3.Rearrange the formula to make x the subject: 2p = 3x 2p/3 = x2p = 3xx = 2p/3÷3÷3Divide both sides by 3We made x the subjectSwap sides Hint 1: Because the x is multiplied by 5 here in order             to make x the subject we have to divide both             sides of the formula by 5.Rearrange the formula to make x the subject: 4y + 4 = 5x 4y + 4 = 5xx =4y + 4÷554y + 45= x÷5We made x the subjectDivide both sides by 5Swap sides Hint 1: Because the x is multiplied by 2p here in order             to make x the subject we have to divide both             sides of the formula by 2p.Rearrange the formula to make x the subject: n = 2px x = n/2pn/2p = xn = 2px÷2p÷2pDivide both sides by 2pWe made x the subjectSwap sides Hint 1: Get rid of the 3 on the right-hand sideRearrange the formula to make x the subject:to have 2x on its own. You can do it by taking3 away from both sides or by moving +3 from right-hand side to left-hand side(Remember to change the + sign to -)3p + 2 = 2x + 3 3p + 2 = 2x + 3x =3p - 1 = 2x3p - 12-33p - 12= x-3We made x the subjectDivide both sides by 2to get x on its ownSwap sidesTake away 3from both sides Hint 1: Get rid of the b on the right-hand sideRearrange the formula to make x the subject:to have x on its own. You can do it by takingb away from both sides of the formula or by moving the +b from right-hand side to left-hand side of the formula.(Remember to change the - sign to +)y = ax + b x =y - b = axy - by = ax + b-bay - ba= x-bx is multiplied by a here,so we have to divideboth sides by aWe made x the subjectSwap sidesTake away b from both sides Hint 1: Notice that you can write this formula as:Rearrange the formula to make x the subject:y = 1/2 xy = x2 2y = xx2x = 2yy = x2x2Multiply both sides by 2We made x the subjectSwap sides
Students who took this test also took :

Created with That Quiz — where a math practice test is always one click away.