Question

-3*(1/15+x)-5*(1/10-3x)=2x

Answer 1

-1/5-3х-1/2+15х=2х
-3х+15х-2х=1/5+1/2
10х=7/10
х=7/100
наверно так

Answer 2

-3*(1/15+х)-5*(1/10-3х)=2х
15х-2х-3х=3/15+5/10
10х=21/30
х=21/300
х=0,07