Question

раскрыть скобки и упростить -(5b-(2-3b))+7b​

Answer 1

- (5b - (2 - 3b)) + 7b​ =

= - (5b - 2 + 3b) + 7b =

= - (8b - 2) + 7b =

= - 8b + 2 + 7b =

= - b + 2.