2(х-7+х-6)=4х-26 ықшамдау

Question

2(х-7+х-6)=4х-26 ықшамдау

Answer 1

2(x-7+x-6)=4x-26

2(2x-13)=4x-26

4x-26=4x-26

0=0

Answer 2

2(х-7+х-6)=4х-26
2х-14+2х-12=4х-26
2х+2х-4х=-26+14+12
0=0