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

1) 3x + 5x + 96 = 1568;8х + 96 = 1568;8х = 1568 - 96;8х = 1472;х = 1472 : 8;х = 184.Проверка.3 * 184 + 5 * 184 + 96 = 1568;552 + 920 + 96 = 1568;1568 =1568, верно.2) 357z - 149z - 1843 = 11469;208z - 1843 = 11469;208z = 11469 + 1843;208z = 13312;z = 13312 : 208;z = 64.Проверка.357 * 64 - 149 * 64 - 1843 = 11469;22848 - 9536 - 1843 = 11469;11469 = 11469, верно.3) 2y + 7y + 78 = 1581;9у + 78 = 1581;9у = 1581 - 78;9у = 1503;у = 1503 : 9;у = 167.Проверка.2 * 167 + 7 * 167 + 78 = 1581;334 + 1169 + 78 = 1581;1581 = 1581, верно.4) 256m - 147m - 1871 = 63747;109m - 1871 = 63747;109m = 63747 + 1871;109m = 65618;m = 65618 : 109;m = 602.Проверка.256 * 602 - 147 *602 - 1871 = 63747;154112 - 88494 - 1871 = 63747;63747 = 63747, верно.