Asked by maddie

-4(2-r)=12
-8-4r=12
-8-4r=20
r=-5
Answered by Bosnian
- 4 ( 2 - r ) = 12

- 4 ∙ 2 - 4 ∙ ( - r ) = 12

- 8 + 4 r = 12

4 r = 12 + 8

4 r = 20

r = 20 / 4

r = 5
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