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((6*a)/12)*b = 0
1/2*a*b = 0
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x in (-oo:+oo)
| 530x-15000-x^2=20 | | 16-9x+4= | | (3t^2+6t-1)+(5t^2+4t+7)=0 | | 8=6-4x+10 | | 3x+2x+4x=9x | | 3.75z=4 | | (6+u)(5u+3)=0 | | -x-10=3x+14 | | 4x+18-13x=-8-13 | | -7(2t+3)=-49 | | f(180+-19x)=x+19x | | 12x+11y=225 | | 6+3y-18=22 | | (-4x^3)+6x=0 | | 2(f-10)=-32 | | 4-(x-5)=19 | | F(-6)=x-9 | | y={2/11}x=2 | | 10n+20=61 | | -5z-4=24 | | 27+12x=9y | | 10(s-3)=-88 | | 18x^3-5x^2-9x=0 | | p=9(4)-1 | | 10n=37 | | 3(2x-8)=3-4(3-x) | | 2u^2+4u+43=(u+6)(u+6) | | x+19x=90 | | c=3.14*1.5 | | 0.35X^2-32.9+975=975 | | 4/m-3=2/7 | | 15n+30=59 |