Question

Х-2*(х+5) при х=-7
Помогите

Answer 1

$x - 2x - 10 = - x - 10 = - ( - 7) - 10 = 7 - 10 = - 3$

Answer 2

x-2(x+5) = x-2x-10 =-x-10 =-(-7)-10 = 7-10 = -3

Ответ: -3