Question

раскройте скобки а)4у-(3у-(2у+1)) ,a-(2x-(2a-x)),

Answer 1

4у-(3у-(2у+1)) =
= 4y-(3y-2y -1) =
= 4y - 3y +2y +1 =
= 3y +1

a-(2x-(2a-x)) =
= a- (2x - 2a +x) =
= a - 2x +2a -x_ =
= 3a - 3x