Question

решите 7,8,9. заранее спасибо.​

Answer 1

7) -15/16-(-9/24) = -45/48+18/48=-27/48=-9/16

$\frac{7}{12} - \frac{5}{6} = \frac{7}{12} - \frac{10}{12} = - \frac{3}{12} = - \frac{1}{4}$

$2 \times \frac{1}{4} - ( - 4 \times \frac{1}{5} ) = 2.25 + 4.2 = 6.65$