Odpowiedź:
5.56
a)
x + 4 > 2 - 3x
4(x - 1) > 2 + 7x
x + 3x > 2 - 4
4x - 4 > 2 + 7x
4x > - 2
4x - 7x > 2 + 4
4x > - 2
- 3x > 6
x > - 2/4
x < - 3/6
x > - 1/2
x < - 1/2
x ∈ R \ {- 1/2}
c)
3x/2 - 3/5 < 4x - 3 | * 10
x/5 - 3 1/3 > 1 3/4 - 5/2x | * 60
5 * 3x - 2 * 3 < 10 * 4x - 3 * 10
12x - 20 * 10 > 15 * 7 - 30 * 5x
15x - 6 < 40x - 30
12x - 200 > 105 - 150x
15x - 40x < - 30 + 6
12x + 150x > 105 + 200
- 25x < - 24
162x > 305
25x > 24
x > 305/162
x > 24/25
x > 1 143/162
x > 1 143/162
