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
