3 years ago

-63=-5(1+4r)-3(7r-8)

Mathematics

1 answer:

BARSIC [14]3 years ago

7 0

Answer:

-63=-5(1+4r)-3(7r-8)
-63=-5-20r-21r+24
-63=19-41r
41r=19+63
41r=82
41r/41=82/41
r=2

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