Question

плиз сдать надо уже!!!​

Answer 1

Ответ:

$- (2 - a) = - 2 + a \\ - ( - 3 + a) = 3 - a \\ - ( - a - b) = a + b$

$- ( - 3a + 4b - 5c) = 3a - 4b + 5c \\ - (2a + 2b - 3c - 8) = 2a - 2b + 3c + 8$

$- (3a + b) - (2 - b) = - 3a - b - 2 + b$

$- (2a - b + c) = - 2a + b - c$

$7.43 - (2.33 + 7.43) = - 2.33$

$( - 45 + 118) + (232 + 45) = 45 - 45 + 118 + 232 = 350$