Solving 2 Step Equations

It is important to learn this you can apply it to more difficult equations!
left side
= 12right side
The solution is : y = 2
We also use INVERSE OPERATIONS.The inverse of multiplication is division. The inverse of division is multiplication. The inverse of subtraction is addition. The inverse of addition is subtraction. Example 1 The inverse of addition is subtraction, so we need to We need to UNDO the 9, which is added to + 9 = 12p p- 9 = - 9 3
Example 2 We need to UNDO the 3, which is subtracted from The inverse of subtraction is addition, so we need to add 3 to
- 3 = 17s + 3 = + 3
Example 3 The inverse of multiplication is division, so we need to divide We need to UNDO the 5, which is multiplied by ÷ = 35 5x
5 = ÷ 5
However, it is important to remember to use inverse operations to
Use inverse operations to undo the constant before undoing the coefficient. Coefficient4x+9=21 ConstantExample 1 4x4x = 12 4 4 +x- 9 9==- 9 213solution divide both sides by 4 subtract 9 from both sides Example 2 2p - 3 = 272p = 302 p = 15+ 3 +3 2 add 3 to both sides solution divide both sides by 2 Make sure you type in the+ addition or - subtractionsign on both sides. SLOW DOWN!! You have to put in answerson the next screen. Your turn! 5y - 15 = 20Fill in the missing numbers. 5y = 35y =Type in the + or -sign and the number. Solve these two step equations. 3y + 8 = 233y = 15y =Type in the + or -sign and the number. Solve these two step equations. 4y - 1 = 154y = 16y =Type in the + or -sign and the number. Solve these two step equations. 5y - 4 = 365y = 40y =Type in the + or -sign and the number. Solve these two step equations. y - 1 = 25x y =5y =x Type in the + or -sign and the number. Solve these two step equations. y + 14 = 233x y =3y =x Type in the + or -sign and the number. Solve these two step equations. y - 9 = 154x y =4y =x Type in the + or -sign and the number. Solve these two step equations. 7y - 9 = 54y ==Type in the + or -sign and the number. Solve these two step equations. 4y + 1 = 33y ==Type in the + or -sign and the number. Solve these two step equations. 3y - 8 = 22y ==Type in the + or -sign and the number. Solve these two step equations. 2y + 7 = 17y ==Type in the + or -sign and the number. Solve these two step equations. 7y + 9 = 44y ==Type in the + or -sign and the number. |

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