(х-7/15)+5/8=17/24
х-7/15+5/8=17/24
х+19/120=17/24
х=17/24-19/120
х=11/20
4/5-(х+1/60)=2/3
4/5-х-1/60=2/3
-х+47/60=2/3
-х=2/3-47/60
-х=-7/60
х=7/60
4 3/4-(х-2 5/8)=6 2/7
19/4-х+21/8=44/7
-х+59/8=44/7
-х=44/7-59/8
-х=-61/56
х=1 5/56
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(х-7/15)+5/8=17/24
х-7/15+5/8=17/24
х+19/120=17/24
х=17/24-19/120
х=11/20
4/5-(х+1/60)=2/3
4/5-х-1/60=2/3
-х+47/60=2/3
-х=2/3-47/60
-х=-7/60
х=7/60
4 3/4-(х-2 5/8)=6 2/7
19/4-х+21/8=44/7
-х+59/8=44/7
-х=44/7-59/8
-х=-61/56
х=1 5/56