Question

2х+1/1,3=2,5/0,65
2,7/9=1/1/5/3х+1

Answer 1

2.79=1 153х+1
2.7*(3х+1)=9*1 15
8.1х+2.7=10.8
8.1х=10.8-2.7
8.1х=8.1
х=8.1:8.1
х=1

Answer 2

спс

Answer 3

надоела