. а) 2х+9−3х−11+7х+23,если х=−5;

Question

. а) 2х+9−3х−11+7х+23,если х=−5;

Answer 1

-10+9+15-11-35+23 = -9
Ответ: -9

Answer 2

2х+9-3х-11+7х+23
10+9-15-11+35+23
77-26
51