4 -2Solving Addition and Subtraction

Equations (pgs 156 - 159)

Standard: Patterns, Functions and Algebra

Indicators: P9: Recognize a variety of uses for variables; represent the equation-solving process

Important Steps to Remember! • Your goal for every

equation…

• Use the… – (or opposite operation)

• Keep the equation…

• Show every…

• To Isolate the variable

• Inverse operation

• Balanced

• Step!

Example…• Although it seems easy… be sure

to keep your equation balanced and always show that work!

x + 3 = - 4 -3 - 3

X = - 7

More Examples1) w - 4.6 = -10.3 +4.6 + 4.6 w = - 5.7

2) y + 3/4 = 5/8 - 3/4 -3/4 y = -1/8

(-6/8)

Homework

4-2Pg. 158-159# 4-10 All#12-28 Even#41-42