Question

Решите 2 уравнения )
14x+4х-2х=640
20х-7х-3х=230.
Cрочно!

Answer 1

16x=640
x=640:16
x= 40

10x=230
x=23

Answer 2

14х+4х-2х=640
16х=640
х=40
20х-7х-3х=230
10х=230
х=23