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(2x + 1)/3 - (3x - 1)/2 > 1 / * 6
2(2x + 1) - 3(3x - 1) > 6
4x + 2 - 9x + 3 > 6
- 5x > 6 - 3 - 2
- 5x > 1
5x < - 1
x < - 1/5
ta liczba - 1
b)
(7x + 1)/9 - (4x - 5)/5 > 1 / 45
5(7x + 1) - 9(4x - 5) > 45
35x + 5 - 36x + 45 > 45
- x > 45 - 45 - 5
- x > - 5
x < 5
ta liczba to 4
c)
(4x - 3)/3 - (8x - 2)/5 > - 8/7 / * 105
35(4x - 3) - 21(8x - 2) > - 8/7 * 105
140x - 105 - 168x + 42 > - 840/7
- 28x > - 120 - 42 + 105
- 28x > - 162 + 105
- 28x > - 57
28x < 57
x < 57/28
x < 2 1/28
ta liczba to 2
d)
(3x - 5)/4 - (5x - 8)/6 > 1/6 /* 12
3(3x - 5) - 2(5x - 8) > 12/6
9x - 15 - 10x + 16 > 2
- x > 2 + 15 - 16
- x > 1
x < 1
ta liczba to 0