Solving two step equation

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Solving Two-Step Equations

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Presentation transcript:

Solving two step equation Review

What is a two step equation? An equation written in the form Ax + B = C

Opposite Operations Addition  Subtraction Multiplication  Division

Steps for Solving Two-Step Equations Solve for any Addition or Subtraction on the variable side of equation by “undoing” the operation from both sides of the equation. Solve any Multiplication or Division from variable side of equation by “undoing” the operation from both sides of the equation.

Helpful Hints? Identify what operations are on the variable side. (Add, Sub, Mult, Div) “Undo” the operation by using opposite operations. Whatever you do to one side, you must do to the other side to keep equation balanced.

Ex. 1: Solve 4x – 5 = 11 4x – 5 = 15 +5 +5 (Add 5 to both sides) 4x = 20 (Simplify) 4 4 (Divide both sides by 4) x = 5 (Simplify)

Try These Examples 2x – 5 = 17 3y + 7 = 25 5n – 2 = 38 12b + 4 = 28

Try These Examples x/5 – 3 = 8 c/7 + 4 = 9 r/3 – 6 = 2 d/9 + 4 = 5

Activity one http://www.crctlessons.com/two-step-equations-game.html

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Activity two: design a poster Cooking Club: The Cooking Club made some pies to sell at a basketball game to raise money for the new math books. The cafeteria contributed four pies to the sale. Each pie was then cut into five pieces and sold. There were a total of 60 pieces to sell. How many pies the club made?

Homework Review