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(7^x-1)/x
x*sin(y)
5*x^-2
x^2*(x+10)-x-10 = 0;x
x
x^2*(x+6)-(9*(x+6)) = 0;x
x
| .25x+.20(100-x)=21 | | x+2(3.75)=10 | | 20y=-15 | | 9x-7+4x+3x-6x=9y(2x+3)-7 | | 5(4x+6)=26 | | -4(x-2)=4(2x-1)+12 | | 0.18(36+x)=9 | | 0.15x+x=5900 | | 1/4(9x-20) | | -4y+y=2y | | 1.33+2x=17 | | 11x-10x=15 | | X-30=1/3X | | 4x^5-108x^2=0 | | Y/20=10/20 | | 6x-2=4x-5 | | 15x+30(x-5)=165 | | 7x-5=7x+2 | | 2x+4y=x+y | | 2w+7w=84-21 | | 3x+2(4+X)=36 | | -3x-17=-17(17+3x) | | 3t(1+4t+4)=0 | | 0.25+3.4=-7 | | (y-7)(-3y^2+5y+1)= | | 28=6(u+8)-8u | | 4x10^3/5x10^5 | | 3(-2y+10)-2y=0 | | x+4*x+9= | | 5+4x=24 | | -w-2(w+3)=5-3-w | | 6n^2=23 |