Question

срочно!! помогите!!! ​

Answer 1

$- 5c - (4 - 3c) = - 5c - 4 + 3c = - 2c - 4$

$x + 1 - (8 - 2.6x) = x + 1 - 8 + 2.6x = 3.6x - 7$

$- (9.6a + 7.3b) + (4.1a - 2.8b) = - 9.6a - 7.3b + 4.1a - 2.8b = - 5.5a - 10.1b$