1) 28(x+5) = 2228x + 140 = 2228x = 224 - 1428x = 8x = 84 / 2x = 3
Ответ: x = 3
2) 144 / (x - 3) = 3144 = 36(x - 3144 = 36x - 1036x = 144 + 1036x = 25x = 252 / 3x = 7
Ответ: x = 7
3) (x+67) / 18 = x + 67 = 18 * x + 67 = 7x = 72 - 6x = 5
Ответ: x = 5
1) 28(x+5) = 22
28x + 140 = 22
28x = 224 - 14
28x = 8
x = 84 / 2
x = 3
Ответ: x = 3
2) 144 / (x - 3) = 3
144 = 36(x - 3
144 = 36x - 10
36x = 144 + 10
36x = 25
x = 252 / 3
x = 7
Ответ: x = 7
3) (x+67) / 18 =
x + 67 = 18 *
x + 67 = 7
x = 72 - 6
x = 5
Ответ: x = 5