14- Solving 2 Step Equations

Example 1 We need to UNDO the 9, which is added to + 9 = 12p p- 9 = - 9
Example 3 We need to UNDO the 5, which is multiplied by ÷ = 35 5x
5 = ÷ 5
Use inverse operations to undo the constant before undoing the coefficient. Coefficient4x+9=21 ConstantExample 1 4x 4 4 x4x = 12+- 9 9==- 9 21divide both sides by 4 subtract 9 from both sides solution Example 2 2p - 3 = 272p = 302 p = + 3 +3 2 add 3 to both sides divide both sides by 2 solution Your turn! 5y - 15 = 20Fill in the missing numbers. 5y = 35y =Solve these two step equations. 3y + 8 = 233y = 15y =Solve these two step equations. 4y - 1 = 154y = 16y =Solve these two step equations. 5y - 4 = 365y = 40y =Solve these two step equations. 6y + 7 = 376y = 30y =Solve these two step equations. 7y - 9 = 54y ==Solve these two step equations. 2y - 13 = 1y == |

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