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(x^2)/(x^2+1)
10*x-(10*y)-100+100;50-(5*x)-(13*z)+130;a+z;2*b-(2*a)+x-z;y-b
(2*x-6)^2 < 4*x-13;x
x
(x+3)*(112/x-12) = 112;x
x
1/x
| 4a-3=9+6a | | x=8log | | g(-2)=-5x+2 | | 7x-2.3=7x-7.9 | | 9x-5+6x+20=180 | | 4u/3=36 | | 28-3X=3X-84 | | 7x=K | | d/2.6=3 | | 9x-5=6x+20 | | 5/6x=10x | | X-8÷24=3/4 | | 70(4-x)(220)=70(x)(210) | | 5x+16=6x-7 | | x+5.1=7.3 | | xdy-ydx=4y(x^2+y^2)dx | | 2x-5=ex+2 | | 3z+9=2z+1 | | 5x+16+6x-7=180 | | 15/32-1/8 | | 11x^2-18=7x^2+21x | | -64x=-x/4 | | (2x-5)=(x+2) | | Y=-.0037(x^2-290x+21025)+78 | | -3t^2+12t+36=h(t) | | Y=-.0037(x^2-290+21025)+78 | | 80-5x=50-2x | | -2(3x-4)=4(5-x) | | X-0/7 | | A-13=8 | | (ab+8+1)-(-6ab+4)= | | a-2b-c=0 |