Question

ПОМОГИТЕ

Известно,что a-b=6,
c=5

4(a-b)
————
c-3•(a-b)

Answer 1

$\frac{4(a - b)}{c - 3(a - b)} = \\ = \frac{4 \times 6}{5 - 3 \times 6} = \frac{24}{5 - 18} = \\ = - \frac{24}{13} = - 1 \frac{11}{13}$