Algebra 1 Section 3.2 Solve equations by multiplying and dividing Transformations for solving equations 1. Multiply each side by the same number 2. Divide each side by the same number Solve 5x = 15-2x = 7

Solve x= ¾ x = ¼ = -½ x

Properties of equality 1. Addition If a = b then a + c = b + c 2. Subtraction If a = b then a – c = b – c 3. Multiplication If a = b then a∙c = b∙c 4. Division If a = b then a/c = b/c; c ≠0 Identify the property shown If x = 5 then 2x = 2(5) If 7 = y then = y + 6 If 12 = 6x then 2 = x If 2x = 7 then 2x – y = 7 - y

Page 140 ex 4 (frames per hour)(hours) = total number of frames Total frames = number of frames per second total seconds

Similar Triangles 12 = 6 4 2

The triangles are similar. Solve for x and y.

You ate three of the eight pizza slices and you paid $3.30 as your share of the cost. How much did the whole pizza cost?

assignment Page 141 Problems 13, even, even, 59,66,74,76