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6-2x-3x+3 > 0
9-5x > 0
-5x > -9 |:(-5)
x < ⁵/₉
2(3-x)-3(x-1) < 7(1-x)-(2x-2)
6-2x-3x+3 < 7-7x-2x+2
3-5x < -9x+9
-5x+9x < 9-3
4x < 6 |:4
x < ⁶/₄
x < 1 ²/₄
x < 1½
6-2x-3x+3>0
-5x+9>0
5x<9
x<5/9
x∈(-∞, 5/9)
b) 2(3-x)-3(x-1)< 7(1-x)-(2x-2)
-5x+9< 7-7x-2x+2
-5x+9< -9x+9
4x< 0
x<0
x∈(-∞,0)