Question

спростіть вираз: -5-(a+b-6)+(7+a+b​)

Answer 1

$-5-(a+b-6)+(7+a+b) = \\ = - 5 - a - b + 6 + 7 + a + b \\ = - a + a - b + b - 5 + 6 + 7 = \\ = 8$