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

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