1) 3x + 5 < 3x + 6 ⇔ 3x - 3x < 6 - 5⇔ 0 , 1, nu convine
2) 4x + 7 > 4x + 10 ⇔ 4x - 4x > 10 -7 ⇔ 0 > 3, nu convine
3) 7x + 41 > 6x + 22 ⇔ 7x - 6x > 22 - 41 ⇔ x > - 19, x∈ ( - 19, + 00)
4) 18 + 10x < 5x + 10 + 2x + 6 ⇔ 10x - 5x - 2x < 10 + 6 - 10
10x - 7x < 6 ⇔ 3x < 6 ⇔ x < 6/3 ⇔ x < 2, x∈ ( - 00, 2)