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1) a-14<c-14
a<c-14+14
a<c ВЕРНО
2) а+23<c+23
a<c -ВЕРНО
3) а/4<c/4 |*4
a<c ВЕРНО
4) -а/30<-c/30 |*-30
a>c НЕВЕРНО
Ответ 4) НЕВЕРНО
|5x + 3| = |3 - x|
5x + 3 = 3 - x или 5x + 3 = - (3 - x)
5x + x = 3 - 3 5x + 3 = - 3 + x
6x = 0 5x - x = - 3 - 3
x₁ = 0 4x = - 6
x₂ = - 1,5