Номер 568 (1 столбик)
номер 569 (а,б)

Пошаговое объяснение:

. ..........,.,.,.,..,.,.,.

1.1)4x + 4x = 424

8x = 424

x = 424 : 8 = 53

2)15y - 8y = 714

7y = 714

y = 741 : 7 = 102

3)9z + z = 500

102 = 500

z = 500 : 10 = 50

2.1)7x - 4x = 51

3x = 51

x = 51 : 3 = 17

2)23p - 6p = 102

17p = 102

p = 102 : 17 = 6