aleksandruklili 3х+5х+96=1568
8х+96=1568
8х=1568-96
8х=1472
х=1472:8
х=184

357z-149z-1843=11469
208z-1843=11469
208z=11469+1843
208z=13312
z=13312^208
z=64

2у+7у+78=1581
9у+78=1581
9у=1581-78
9у=1503
у=1503:9
у=167

88880:110+х=7000
808+х=7000
х=7000-808
х=6192

3810+1206:у=3877
1206:у=3877-3810
1206:у=67
у=1206:67
у=18

к+12705:121=105
к+12705=105*121
к+12705=12705
к=12705-12705
к=0