Question

9 номер, ОЧЕНЬ СРОЧНО
Я УЖЕ СПАТЬ ХОЧУ

Answer 1

Ответ:

A)

$12 + 5(a - 2) = 12 + 5 \times a + 5 \times ( - 2) = 12 + 5a - 10 = 5a + 2$

B)

$13 + 2(7 - x) = 13 + 2 \times 7 + 2 \times ( - x) = 13 + 14 - 2x = - 2x + 27$

C)

$7c - 6(5 + c) = 7c - 6 \times 5 - 6 \times c = 7c - 30 - 6c = c - 30$

D)

$21y - (5 + y)7 = 21y - 5 \times 7 - y \times 7 = 21y - 35 - 7y = 14y - 35$

E)

$25x + 2(9 - 3(2x - 5)) = 25x + 2(9 - 3 \times 2x - 3 \times ( - 5)) = 25x + 2( 9 - 6x + 15) = 25x + 2 \times 9 + 2 \times ( - 6x) + 2 \times 15 = 25x + 18 - 12x + 30 = 13x + 48$

F)

$((5 - 4(x - 9)) - x)3 - 4 = (5 - 4 \times x - 4 \times ( - 9) - x)3 - 4 = (5 - 4x + 36 - x)3 - 4 = (41 - 5x)3 - 4 = 41 \times 3 - 5x \times 3 - 4 = 123 - 15x - 4 = - 15x + 119$