Номер 1
34 * (618 - 518) = 34 * 100 = 3400
Номер 2
(a + 6) * 3 = 3a + 6 * 3
(3 - 2b) * 7 = 3 * 7 - 2b * 7
8 * (3c + 7d) = 8 * 3c + 8 * 7d
Hомер 3
56x - 34x = 22x
97y + 43y = 140y
7z - 2z + 4 = 5z + 4
Номер 4
6x + 18x = 72
24x = 72
x = 72 : 24
x = 3
Номер 1
34 * (618 - 518) = 34 * 100 = 3400
Номер 2
(a + 6) * 3 = 3a + 6 * 3
(3 - 2b) * 7 = 3 * 7 - 2b * 7
8 * (3c + 7d) = 8 * 3c + 8 * 7d
Hомер 3
56x - 34x = 22x
97y + 43y = 140y
7z - 2z + 4 = 5z + 4
Номер 4
6x + 18x = 72
24x = 72
x = 72 : 24
x = 3