Question

Упростите выражение -3(4-2х)+7(х-2)

Answer 1

-3(4-2х)+7(х-2)=-12+6х+7х-14=13х-26

Answer 2

$-3(4 - 2x) + 7(x - 2) = -12 + 6x + 7x - 14 = 13x - 26; \ 13x - 26 = 0 \ 13x = 26 \ x = 26 : 13 = 2$