ответ: 3, 4, 3
Пошаговое объяснение:
6) 12x-6 = 10x
12x-10x = 6
2x = 6
x = 3
7) 4x+4 = 20
4x = 20-4
4x = 16
x = 4
8) 8x+4-5x = 13
3x = 13-4
3x = 9
ответ: 3, 4, 3
Пошаговое объяснение:
6) 12x-6 = 10x
12x-10x = 6
2x = 6
x = 3
7) 4x+4 = 20
4x = 20-4
4x = 16
x = 4
8) 8x+4-5x = 13
3x = 13-4
3x = 9
x = 3