Question

Помогите пожалуйста))))!

Answer 1

$frac{6c-c^2}{1-c} : frac{c^2}{1-c} = frac{c(6-c)}{1-c} cdot frac{1-c}{c^2} = frac{6-c}{c} = frac{6}{c} - 1 = frac{6}{1,2} - 1 = frac{60}{12}-1 = 5 - 1 = 4$

Ответ: 4