IХ+1I=2
(8/15+2/9У):3/5=2
=> x=1, x=-3
х+1=2 х+1=-2
х=2-1 х=-2-1
х1=1 х2=-3 (8/15+2/9У):3/5=2
(8/15+2/9у)=2*3/5
8/15+2/9у=6/5
2/9у=6/5-8/15
2/9у=18/15-8/15
2/9у=10/15
у=2/3 : 2/9
у=2/3*9/2
у=3