2(1-x)-3(x-9)>4(x+1)-20
2-2x-3x+27>4x+4-20
-5x+29>4x-16 /-29
-5x>4x-45 /-4x
-9x>-45 /*(-9)
x<5
--\----\---\---\--\----\
------|---|----------|--\---->
0 1 5
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2(1-x)-3(x-9)>4(x+1)-20
2-2x-3x+27>4x+4-20
-5x+29>4x-16 /-29
-5x>4x-45 /-4x
-9x>-45 /*(-9)
x<5
--\----\---\---\--\----\
------|---|----------|--\---->
0 1 5