3 * (x - 7) + 29 = 137
3 * (x - 7) = 137 - 29
x - 7 = 108 : 3
x = 36 + 7
x = 43
Ответ: x = 43.
431 - 4 * 4(25 + x) = 307
431 - 307 = 4 * 4(25 + x)
124 : 16 = 25 + x
7,75 - 25 = x
x = - 17,25.
Ответ: x = - 17,25.
3 * (x - 7) + 29 = 137
3 * (x - 7) = 137 - 29
x - 7 = 108 : 3
x = 36 + 7
x = 43
Ответ: x = 43.
431 - 4 * 4(25 + x) = 307
431 - 307 = 4 * 4(25 + x)
124 : 16 = 25 + x
7,75 - 25 = x
x = - 17,25.
Ответ: x = - 17,25.