WARM-UP 1. + 3 = 7 2. - 5 = 8 3. 4 = 284. ÷ 3 = 5 5. 3 + 4 = 22 413 7 15 6.

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Presentation transcript:

WARM-UP = = = 284. ÷ 3 = =

OBJECTIVE CONTENT: IWBAT solve two-step equations.

OBJECTIVE LANGUAGE: IWBAT show the steps to solve a two-step equation, identify orally the coefficient, variable, constant, and solution.

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Algebraic Expressions x – y 5x x 4a – 2 3x + 7 bh 3x 2 – 5x 3a 2 – 5a + 7 7

Algebraic Expressions 5x+ 3 Variable TermConstant

Variable Term 5x CoefficientVariable

ExpressionVariable TermConstantCoefficientVariable 5x + 75x 7 5 x 2a – 62a-6 2 a -7b + 1-7b 1-7 b 8 + 9s9s 8 9 s 4t 0 4 t n – 8 n-8 1 n -½ x – 2-½ x -2 -½ x

Algebraic Equation Two expressions set equal (=) to each other.

Algebraic Equations x + 5 = 2 7 – y = 1 5x = 25 x 17 = 4a – 2 5 = 3x + 7 A = bh – 5x = 2 3x + 2 = 5x = 10

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Two – Step Equations 5x + 3 = 38 Variable Term? 5x

Two – Step Equations 5x + 3 = 38 Constant? 3

Two – Step Equations 5x + 3 = 38 Solution? 38

Two – Step Equations 5x + 3 = 38 Solving a two-step equation

Two – Step Equations 5x + 3 = 38 Step 1: Draw a line through the equal sign LEFTRIGHT

Two – Step Equations 5x + 3 = 38 Step 2: Identify the variable term

Two – Step Equations 5x + 3 = 38 Step 3: Opposite of constant under constant and solution - 3

Two – Step Equations 5x + 3 = x=35

Two – Step Equations Step 4: Divide the Coefficient

Two – Step Equations 5x + 3 = x=35 55 x =7

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Solve 7 – 2a = a=8 -2 a =-4

Solve -21 = 3a – =3a = a

Solve 17 = p = 4p = p

Solve 7w = w = 9

Solve y – 9 = y=-6

Solve -22 = -8 – s = -s 14 = s