8.5 Variables both side of equation

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Presentation transcript:

8.5 Variables both side of equation Objective: students will be able to solve equations that have variables on both sides. They will need to determine how many solutions there will be for each problem.

Information How to solve 2 variable equation Isolate variable divide If variable goes to zero: no solution. Ex: 4x + 3 = 4x – 1 If both sides of equation are equal then: all numbers are solutions. Ex: 4x + 1 = 4x + 1

Teacher Examples 5n – 2 = 3n + 6 8y + 4 = 11y – 17

Student Examples 25u + 74 = 23u + 92 14 + 5y = 50 – 4y

Teacher Examples 6x + 2 = 2(3x + 1) 5(2x + 1) = 10x

Student Examples 25t = 5(5t + 1) 7(2p + 1) = 14p + 7

Perimeters Find the perimeter of the square. X + 4 2x

Student Example Find the perimeters. Box 1 36 – 5x 4x Box 2 12x

Wrap-up Questions/Comments Ic/hw: wkbk. Pg. 53 #1-14