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x+y-15;y-x-3
x+y-15;x-y-15
(e^x-e^-x-(2*x))/(x-sin(x))
(x^2-4)/(x^2-9)-1 >= 0;x
x
(x^3-5*x)/(x^2-9) = 0;x
x
| y-4x=8forx | | 6(2y-7)-(3-2y)= | | 3-3(x+5)=-37+2x | | x+lnx-e=0 | | 2x-8-4x+8= | | Sin70=9/x | | 2c(5c-3)= | | 10-(11x-3)= | | -6=n/10 | | -20=r-18 | | -12=-2+n | | 17p+12q+p-3q-3p= | | 3=b-8 | | -5y=4.85 | | X^2-8-3x-10=0 | | 0=2+23.5t-4.9t^2 | | (2)(3)(c-18)=7 | | -2x-5(-3/25)=2 | | 18*x/2=72 | | 200=-16t^2+117t+2 | | y=12x-11 | | 58=22/x | | 7w+3a=5w+9 | | (10000^1/4)^3 | | 150=-16t^2+117t+2 | | Y=16-25(cosx) | | 6(-1)=18x | | 26/k=5/m | | Log*5(3x+1)=2 | | 3x+27=6x+75 | | 10x+5=-5x+80 | | 2^3x*log3(8/x) |