3x+18=x+40 2x-25=x-30
9x²-18=7x²+20
5x²-60=7x²+40+100
4x²+30=2x²+368
2x²+10=x²+410
4x+35-9=-19+2x+5
9x+12-6=4x-30+3
9x²-18=7x²+20
5x²-60=7x²+40+100
4x²+30=2x²+368
2x²+10=x²+410
4x+35-9=-19+2x+5
9x+12-6=4x-30+3
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