3х+5х+96+1568 357х-149х-1843=11.469 2х+7х+78=1581
1.8х+96=1568 8х= 1472 Х= 184 2. 208х- 1843=11469 208х= 13312 Х= 64 3. 9х+ 78= 1581 9х= 1503 Х= 167