Question

айтындаршы отинемин​

Answer 1

Ответ:

№639

$1) \frac{a + 7 }{b} = \frac{ - 10 + 7}{ - 0.75} = \frac{ - 3}{ - 0.75 } = 4$

$2) \frac{9 - 4c}{d} = \frac{9 - 4 \times ( - 1.5)}{3} = \frac{3}{3} = 1$

$3) \frac{3x + 5}{y} = \frac{3 \times \frac{5}{6} + 5}{ 2.5} = \frac{7.5}{2.5} = 3$

$4) \frac{7a - 4}{5b} = \frac{7 \times ( - 3) - 4}{5 \times (0.5)} = \frac{ - 24}{2.5} = - 9.6$