5х+(13,4-2х)=16,4х 5(2х-3)+11=6х
3х+13,4-16,4х=0 10х-15+11-6х=0
-13,4х+13,4=0 10х-4-6х=0
4х-4=0
12-(4х+5)=7+х
12-4х-5-7-х=0 1,7х+0,9=2х
7-4х-7-х=0 -0,3х+0,9=0
-4х-х=0
-5х=0 -2(7-у)+13=у
-(14-2у)+13-у=0
-14+2у+13-у=0
-1+2у-у=0
-1+у=0
5х+(13,4-2х)=16,4х 5(2х-3)+11=6х
3х+13,4-16,4х=0 10х-15+11-6х=0
-13,4х+13,4=0 10х-4-6х=0
4х-4=0
12-(4х+5)=7+х
12-4х-5-7-х=0 1,7х+0,9=2х
7-4х-7-х=0 -0,3х+0,9=0
-4х-х=0
-5х=0 -2(7-у)+13=у
-(14-2у)+13-у=0
-14+2у+13-у=0
-1+2у-у=0
-1+у=0