1. x + |2x-1|=3
2. |4x-1|+3 >= 16
3.|x-1/x+1|>=1
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1. x+2x-1=3
x+2x=3+1
x+2x=4
3x=4
x=4/3
x+2x=3+1
x+2x=4
3x=4
x=4/3
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