Question

1) -(5а-2)+(9-2а)
2) -(9-11а)+(5а-3)
3) -(18а-3)+(-4а-3)
Заранее спасибо большое!

Answer 1

1) -(5а-2)+(9-2а)=-5a+2+9-2a=11-7a
2) -(9-11а)+(5а-3)=-9+11a+5a-3=16a-12
3) -(18а-3)+(-4а-3)=-18a+3-4a-3=-22a