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Anonymous
5r = 25 is a linear equation in one variable, r.
The solution is r = 5.
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r+5r+5=-25
5r + 8 = -12Subtract 8 from each side:5r = -20Divide each side by 5:r = -4
13r+10=5r-46 r= r = -7
(5r - 4)(5r + 4)
5s-r