3 years ago

If 8=−3r+7r, then r= [blank] −−−−−−.

Mathematics

1 answer:

Svetllana [295]3 years ago

8 0

Answer:

$r = 2$

Step-by-step explanation:

$8 = - 3r + 7r \\ 8 = 4r \\ 4r = 8 \\ \\ r = \frac{8}{4} \\ \\ r = 2$

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