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1;2;1;4;0;0
640*x+y-12;1000*x+y-15
4;15;7;20;0;0
1*x^4-(2*x^3)+1*x^2-(8*x)-12 = 0
2;3;1;2;0;0
| 4x+16=3x+10 | | 5(2x+4)-9=-49 | | 9.32-14.6h=-16.1-18.7h | | 4(3x-2)=4x-48 | | 2a+9=3a+5 | | 13.97-9.2s+12.62=-11.8s-19.95 | | 2(4x+5)=3x-40 | | -17-15c=-15c+1-6 | | -22=2(x-1) | | 5(x+4)-6=9 | | 4-7x=1+2x | | 1-0.8451x-0.1373x^2=0 | | 10p-13=-p+15+13p | | 4k-7=-17+3k | | 2x-10=2(3x-3) | | 4(5x+1)=-5(5x-4) | | 7x+27=3x+31 | | -16j=-12-17j | | 15j=-12+19j | | n+2n+3=18 | | Lg^2x=1 | | 2-9w-5=6-8w | | 3b+20=-5b-20 | | 5y-4=6y+4 | | 2=r/2-3 | | j/11=1 | | -10-4c=c+10-5 | | 10/n=1 | | 1=c/57 | | 14(x-4)=x(x+3) | | 12f=48 | | x+x(.06)=693600 |