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100 - 7r = 44 Subtract 100 from both sides: -7r = -56 Divide both sides by -7: r = 8
63
if the x in the formula means multiply (next time please use * to denote multiplication) then: 7r-38
7r = 3r - 527r (- 3r) = 3r - 52 (- 3r)4r = - 524r / 4 = -52 / 4r = -13
The answer is -r