7/8-(х+5/12)=5/24
х+5/12=5/24-7/8
х+5/12=5/24- 21/24
х+5/12=-16/24
х-5/12=-2/3
х=-2/3 +5/12
х=-8/12+5/12
х=-3/12=-1/4
(2/15+у)-3/70=1/10
2/15+у=1/10+3/70
2/15+у=7/70+3/70
2/15+у=10/70
2/15+у=1/7
у=2/15-1/7
у=14/105-15/105
у=-1/105
