What value of r makes the following equation true

2 answers:

8 0

Answer:

Step-by-step explanation:

8 = -3(2) + 7(2)

8 = (-6) + (14)

8 = 8

4 0

Answer:

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

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What value of r makes the following equation true​