Question

Раскройте скобки
-(8 - x)
-t-(10 - x - y)
- 15x - (-10 + 2y + 7t)

Answer 1

1) -(8-x)= -8+x
2) -t-(10-x-y)= -t-10+x+y
3)-15x-(-10+2y+7t)= -15x+10-2y-7t