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2/5 = 21/x
252*x^1-(117*x^2) = -9408
ln(e) = 0
y/3-8 = y/2-2
7/2-(10/4) = 0
| 2/5=21/x | | 6x+9y=-15 | | (x-.5)/77+1/60=(x)/75 | | (x-.5)/77+1/60=(x)/70 | | (x-.5)/77+2/60=(x)/70 | | (x-.5)/77+2/60=(x)/75 | | x/77+2/60=(x+.5)/75 | | LogC=1.3 | | 3X-5(X-1)=-7(X+3)-20 | | a*6+1=14 | | (r+9)(r-7)= | | y/3-8=y/2-2 | | -4+12=14x-2-13 | | 10h-17=16 | | 4y^2-8y+4=0 | | m^2-3m-378=0 | | 12X+7=5X-14 | | x/75+2/60=(x+.5)/75 | | 7/2-10/4 | | x/75+2=(x+.5)/75 | | (X^5/6)(X^1/6) | | x+.07x=21.4 | | 6x+8z=4+5y | | 40n-10=11 | | 15+7y=-15+2y | | 3(x-4)84/14 | | (1/3x)-1=(1/6x)-1/2x= | | (1/3x)-=(1/6)-1/2x= | | -12x-5=4x^2 | | -4n+18=-2n-4 | | (n-m)/(m^2-n^2) | | 20x^3-4x^2-50x+10=0 |