1) 12=(7x-9)-(11-x)12 = 7x - 9 - 11 + x12 = 8x - 208x = 32x = 4
2) 11x + 103 = 1 + (12x - 31)11x + 103 = 1 + 12x - 3111x + 103 = 12x - 30103 + 30 = 12x - 11x133 = x
Ответ:1) x = 42) x = 133
1) 12=(7x-9)-(11-x)
12 = 7x - 9 - 11 + x
12 = 8x - 20
8x = 32
x = 4
2) 11x + 103 = 1 + (12x - 31)
11x + 103 = 1 + 12x - 31
11x + 103 = 12x - 30
103 + 30 = 12x - 11x
133 = x
Ответ:
1) x = 4
2) x = 133