1) 9t + 4t - 286 = 13t - 286 = 13t = 28t = 22
2) 14x + 9x + 88 = 2723x + 88 = 2723x = 18x = 8
3) 25x - 16x + 54 = 169x + 54 = 169x = 10x = 12
4) 144 / (x - 3) = 3144 = 36(x - 3144 = 36x - 10252 = 36x = 7
5) 21(y - 8) = 821y - 168 = 821y = 25y = 12
6) (x + 67) / 18 = x + 67 = 7x = 5
Ответ: t = 22, x = 8, x = 12, x = 7, y = 12, x = 5.
1) 9t + 4t - 286 =
13t - 286 =
13t = 28
t = 22
2) 14x + 9x + 88 = 27
23x + 88 = 27
23x = 18
x = 8
3) 25x - 16x + 54 = 16
9x + 54 = 16
9x = 10
x = 12
4) 144 / (x - 3) = 3
144 = 36(x - 3
144 = 36x - 10
252 = 36
x = 7
5) 21(y - 8) = 8
21y - 168 = 8
21y = 25
y = 12
6) (x + 67) / 18 =
x + 67 = 7
x = 5
Ответ: t = 22, x = 8, x = 12, x = 7, y = 12, x = 5.