3x+5x+96=1568
357z-149z-1843=11469
2y+7y+78=1581
256m-147m-1871=63747

3х+5х+96=15688х+96=15688х=1568-968х=1472х=1472:8х=184357z-149z-1843=11469208z-1843=11469208z=11469+1843208z=13312z=13312:208z=642y+7y+78=15819y+78=15819y=1581-789y=1503y=1503:9y=167256m-147m-1871=63747109m-1871=63747109m=63747+1871109m=65618m=65618:109m=602