If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x in (-oo:+oo)
(3/5)*x^21 = 3*x // - 3*x
(3/5)*x^21-(3*x) = 0
(3/5)*x^21-3*x = 0
3/5*x^21-3*x = 0
3*x*(1/5*x^20-1) = 0
1/5*x^20 = 1 // : 1/5
x^20 = 5
x^20 = 5 // ^ 1/20
abs(x) = 5^(1/20)
x = 5^(1/20) or x = -5^(1/20)
3*x = 0
3*x = 0 // : 3
x = 0
x in { 5^(1/20), -5^(1/20), 0 }
| .3333p+7=12-.6666p | | (2x^2)/(0.8-x^2)=53.3 | | 3/5+3=21x | | z/325=7 | | z/23=6 | | 1/9p=5/6 | | x=200+0.8(x) | | -5(X-4)+8X=6X-2 | | -6y-9=-3(y+9) | | x+65=50+75 | | 10/27=5/9t | | z^23=6 | | 18y-6=8y-70 | | 50+75=x+65 | | 5(X+4)/6=2X-5 | | 0.2x+1-2=0.5 | | x+(.01x)=15000 | | D=7/3(m-76) | | 2x/2-3x-1=0 | | 5x-3/2+6=-11 | | x-(0.01*x)=1500 | | -7-35/8 | | -6+x-8=24 | | x-(0.1*x)=1500 | | x^2-6x+12=8 | | 8(X-8)=7(X-8) | | 25=-5+x-7 | | 11-9x-7-3x=7 | | 81/3=5/2c | | 7x^2-36x+45=0 | | 6u+22y= | | -3/11X=-2 |