Question

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Answer 1

Ответ:

№1

$\frac{c - 8}{c + 2} = \frac{7}{3} \\ 3(c - 8) = 7(c + 2) \\ 3c - 24 = 7c + 14 \\ 3c - 7c = 14 + 24 \\ - 4c = 28 \\ c = - 7$

№2

$5b - 1 = 6(2b - 13) \\ 5b - 1 = 12b - 78 \\ 5b - 12b = - 78 + 1 \\ - 7b = - 77 \\ b = 11$