3х+5х+96=1568 357z-149z-1843=11469
8х+96=1568 357z-149z=11469+1843
8х=1568-96 357z-149z=13312
8х=1472 226 208z=13312
х=1472:8 z=13312÷208
х=184 z=64
3×184+5×184+96=1568 357×64-149×64-1843=11469
2у+7у+78=1581 256m-147m-1871=63747
2у+7у=1581-78 256m-147m=63747+1871
2у+7у=1503 256m-147m=65618
9у=1503 109m=65618
у=167 m=65618÷109
2×167+7×167+78=1581 m=602
256×602-147×602-1871=63747