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5x-20=3x+6
5x-3x=6+20
2x=26
x=26/2
x=13
b.4x-6 > 9+x
4x-x=9+6
3x=15
x=15/3
x=5
5x-20-3x-6=0
2x-26=0
2x=26
x=13
B. 4x-6-9-x<0
3x-15<0
3x<15
x<5