Question

помогите решить.
2а+(3а-8b)
-5b-(8a-5b)
6x+(7-3x)
-(4x-18)+18

7(5a+8)-11a
9x+3(15-8x)
6(c+1)-6c-5
19y+2(3-4y)+11y

Answer 1

1)5a-8b
2)-8a
3)3x+7
4)-4x