Question

Решите 3х-1-(х+3)=1. 6y-(7у-12)=101. 7,5х64-0,5х. 5х-(4х+7)=43

Answer 1

3х-1-(х+3)=1
3х-1-х-3=1
2х-1=1
2х=2
х=2:2
х=1

6y-(7у-12)=101
6у-7у+12=101
-х+12=101
-х=101-12
-х=89
х=-89

5х-(4х+7)=43
5х-4х-7=43
х=43+7
х=50