4x + 1 < 43 - 31(7 + x)
4x + 1 < 43 - 217 - 31x4x + 1 < -174 - 31x4x + 31x < -174 - 135x < -175x < -5
Ответ: x < -5.
4x + 1 < 43 - 31(7 + x)
4x + 1 < 43 - 217 - 31x
4x + 1 < -174 - 31x
4x + 31x < -174 - 1
35x < -175
x < -5
Ответ: x < -5.