Houghton Mifflin Harcourt Algebra 1, 2015
HM
Houghton Mifflin Harcourt Algebra 1, 2015 View details
1. Solving Equations
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Exercise 4 Page 8

Isolate r using inverse operations.

r=3

Practice makes perfect

To solve the equation, we need to isolate r using inverse operations and the Properties of the Equality.

8 = 3r - 1
8 + 1 = 3r - 1 + 1
9 = 3r
9/3 = 3r/3
3 = r
r = 3