Question

Помогите
Раскройте скобки и упростите выражения
-8(t-2)+4
-15-2(-4-x)
-2(x+4)+10(t-2)
4(6-a)-7(b+9)

Answer 1

- 8(t - 2) + 4 = - 8t + 16 + 4 = - 8t + 20 = 20 - 8t
- 15 - 2(- 4 - х) = - 15 + 8 + 2х = - 7 + 2х = 2х - 7
- 2(х + 4) + 10(t - 2) = - 2х - 8 + 10t - 20 = 10t - 2х - 28
4(6 - а) - 7(b + 9) = 24 - 4a - 7b - 63 = - 4a - 7b - 39