Question

реши уравнения. 2а-а=8; 4х + 2х - х + 2= 17;

Answer 1

2а-а=8
а=8
2*8-8=8
8=8

4х+2х-х+2=17
5х+2=17
5х=17-2
5х=15
х=15:5
х=3
4*3+2*3-3+2=17
17=17