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REVIEW Inverse Operations For each equation, write the inverse operation needed to solve for the variable. Then, check your answer! a.) y + 7 = 14 c.) 5 - s = 25 tap subtract 7 tap subtract 5 b.) a - 21 = 10 d.) x – (-3) =5 tap add 21 tap subtract 3 REVIEW Solving One Step Addition & Subtraction Equations To solve equations, you must use inverse operations in order to isolate the variable on one side of the equation. Whatever you do to one side of an equation, you MUST do to the other side! +5 +5 Examples: y + 9 = 16 - 9 -9 The inverse of adding 9 is subtracting 9 y=7 m - 16 = 4 +16 +16 The inverse of subtracting 16 is adding 16 m = 20 Remember - whatever you do to one side of an equation, you MUST do to the other!!! One Step Equations (with + and -) Solve each equation then click the box to see work & solution. x + 8 = 12 -click8to show -8 inverse operation x=4 x + 2 = 14 -2 -2 click to show inverse x =operation 12 x - 23 = 43 +23 click to+23 show operation xinverse = 66 x - 18 = 51 +18 click to+18 show inverse operation x = 69 x-4=7 +4click+4 to show xinverse = 11operation x + 5 = 13 - 5to show -5 click inverse operation x=8 click to show inverse operation NOW… Solving One Step Multiplication & Division Equations What is the INVERSE operation for: Addition? Subtraction? Multiplication? Division? click to show inverse operation Subtraction click to show inverse operation Addition click to show inverse operation Division click to show inverse operation Multiplication Examples: 6m = 72 6 6 m = 12 The inverse of multiplying by 6 is dividing by 6 2 x m = 3 x 2 The inverse of dividing by 2 is multiplying by 2 2 m=6 Remember - whatever you do to one side of an equation, you MUST do to the other!!! One Step Equations (mult & div) Solve each equation in your journal or on a whiteboard. Then, check your answers below! 3x = 15 3 3 x=5 click to show inverse operation 4m = 12 4 4 mshow =3 click to inverse operation 25 = 5n 5 5 5=n click to show inverse operation m = 12 2 2 x m = 12 x 2 2 click to show m operation = 24 inverse x=7 5 5x = 7 x 5 5 click to show x inverse = 35 operation 4=x 6 6 x 4 = 6x 6 click to show inverse 24 = operation x