Question

Помогите пожалуйста ​

Answer 1

$\frac{c-2}{6} - \frac{c-7}{12} = \frac{2*(c-2)-(c-7)}{12} = \frac{2c-4-c+7}{12} = \frac{c+3}{12}$

Answer 2

$\frac{c-2}{6} -\frac{c-7}{12} =\frac{2c-4-c+7}{12} =\frac{c+3}{12}$