Подробно1/2х-1=1/3*(х+3/4)
1/2х-1=1/3х+1/3*3/4
1/2*х-1=1/3*х+1/4
1/2*х-1/3*х=1+1/4
3/6*х-2/6*х=5/4
х/6=5/4
х=5/4*6
х=15/2, то есть 7 целых и 1/2
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Подробно
1/2х-1=1/3*(х+3/4)
1/2х-1=1/3х+1/3*3/4
1/2*х-1=1/3*х+1/4
1/2*х-1/3*х=1+1/4
3/6*х-2/6*х=5/4
х/6=5/4
х=5/4*6
х=15/2, то есть 7 целых и 1/2