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

1) 3x + 5x + 96 = 1568;

8 х + 96 = 1568;

8 х = 1568 - 96;

8 х = 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;

9 у + 78 = 1581;

9 у = 1581 - 78;

9 у = 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.