Question

1)7х+3=30-2х
2)0,2х +2,7=1,4-1,1х
3)3:х+15=1:6х+10=9х+360

Answer 1

1 )7х+3=30-2х
7х+2х=30-3;
9х=27;
х=27:9;
х=3 

2) 0,2х +2,7=1,4-1,1х 
0,2х+1,1х=1,4-2,7;
1,3х= - 1,3;
х= -1

3)3:х+15=1:6х+10=9х+360  ?????????????????