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George Vasiliou · Answer 1 · 2021-01-08T05:35:33+0000

Answer:

-20 =r

Explanation:

4r - 8 = 5r + 12

Subtract 4r from each side

4r -4r- 8 = 5r + 12-4r

-8 = r+12

Subtract 12 from each side

-8-12 = r+12-12

-20 =r