1) 28(x+5) = 22428x + 140 = 22428x = 224 - 14028x = 84x = 84 / 28x = 3
Ответ: x = 3
2) 144 / (x - 3) = 36144 = 36(x - 3)144 = 36x - 10836x = 144 + 10836x = 252x = 252 / 36x = 7
Ответ: x = 7
3) (x+67) / 18 = 4x + 67 = 18 * 4x + 67 = 72x = 72 - 67x = 5
Ответ: x = 5
1) 28(x+5) = 224
28x + 140 = 224
28x = 224 - 140
28x = 84
x = 84 / 28
x = 3
Ответ: x = 3
2) 144 / (x - 3) = 36
144 = 36(x - 3)
144 = 36x - 108
36x = 144 + 108
36x = 252
x = 252 / 36
x = 7
Ответ: x = 7
3) (x+67) / 18 = 4
x + 67 = 18 * 4
x + 67 = 72
x = 72 - 67
x = 5
Ответ: x = 5