Question

спростiть вираз: -(a-b)+(4,2+a-5,8)

Answer 1

$- (a - b) + (4.2 + a - 5.8) = - a + b + 4.2 + a - 5.8 = \\ = b - 1,6$

Answer 2

$-a+b+a-1,6 = b-1,6$