Two-Step Equations Lesson 7-1
Steps to Solving Equations 1. “Balance Out” To shift terms of an equation around the “=“ by addition or subtraction Goal: to get variable terms on one side of “=“ and constants on the other 2. “Solve” Most often completed by multiplication or division
Two-Step Equations 3n – 6 = n= 21 n = 7 y - 9 = y = y = y = -21
Two-Step Equations *cannot have a negative variable 5 – m = m = 12 m = -12 * multiply/divide by (-1) on both sides 5 = -x = -x 3 a) -15 = -x b) 15 = x 15 = x
Practice a) 15x + 3 = 48 b) t - 10 = -6 4 c) -a + 6 = 8 d) 13 – 6f = 31
Homework p #12-24 even, all