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2/x
x^-1
251-(0.7*a)-b;257.5-(11.5*a)-b
4-2*x = 6-x^2;x
x
(1/2)*x+(1/3)*x = x-((1/6)*x);x
x
| 8y+6=7 | | 500=900+2q | | y=7x^6-9 | | y/3-9=7 | | 15+2(3x-3)=(2x-8) | | 3/1=6/y | | 6/13=x/72 | | 3(a+7)+6a-3(a+2)=45 | | 8/s=5/9 | | (4v+2)(9+v)=0 | | 10/3=p/9 | | f(x)=14x+x^2+17 | | 4x-11+4x-11+x=180 | | 4x-11+4x-22+x=180 | | 9x-22=180 | | 8x-22+x=180 | | 16x^2+8x=80 | | -3x-3=-5x+19 | | 6x^2-3-7x=0 | | -5y+11=4(2-y+1) | | 9y=5x+5y | | 10m-15=25 | | 2y-6y+3y= | | 9w^5x^2/36w^2x | | 4x+5y+15+12x-3y+95=360 | | 7/9x=-49 | | Y=3ln(2x+1) | | 8x+7=-3+5x+25 | | 19.6212x^2-145.692x+125.94=0 | | -x^2+11-30=0 | | 4x+22=6x+26 | | 15x+6x+18=9x+3x+81 |