− 61 = − 5(5r − 4) +4(3r − 4)

Question

− 61 = − 5(5r − 4) +4(3r − 4)

Answer 1

-61 = -25r+20+12r-16
-61 = -13r+4
13r = 4+61
13r = 65
r = 5 

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