Question

решите ПЛиз уравнение
3х+2х=20
7х+3х=100х
12х-6х=36
20х+70х=900
35х-25х=60
32х-12х=80

Answer 1

$5x=20; x = 4$
$10x =100; x = 10$
$6x=36; x = 6$
$90x=900; x = 10$
$10x=60; x = 6$
$20x=80; x= 4$

Answer 2

Ответ на фото!!!!!!!!!!!!!!!!