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7;12;5;12;1;0
2100;4.2
(x^2-9)/(1-x^2) = 0
x-((x-4)/2) < 2-((2*x+4)/3)
3;8;5;8;0;0
| A^2-7a+4=0 | | 0.3(2t+0.11)=20.6 | | 2m+m+m= | | 2r+2.25=10.75 | | y/1.6=6 | | 4x^2+6x-34=0 | | 7(1-2a)=49 | | 0.6m+2=2.3 | | 3(x-2)+2=2(x+4) | | [9-8]= | | 3.14/4 | | x(2x^2+9x+12)=3 | | 25x-9x^2=0 | | 15-4y=2y-3x | | 3w+1-w=-4 | | 3n+9+6=180 | | 20=0.5t+25 | | 10w=4w+24 | | z+82=9z-7 | | 3/4×2/3=1/6×5/12 | | 3x[3(1+x)-12x]=3 | | 6x+4=5x-8 | | 12x^3-48x^2+60x-24=0 | | 3-2=25-6x | | 2x^3-9x^2+12x-3=0 | | tan(x)/cos(x) | | -2(-7x+4)+9=13 | | 4/9(2n-3) | | x+(x+30)=600 | | 2x-3(x-2)=5-2(2x-3) | | 12x+100=700 | | k+108+29+7k=180 |