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*x-6 = (2*x)/21 // - (2*x)/21
3*x-((2*x)/21)-6 = 0
3*x+(-2/21)*x-6 = 0
61/21*x-6 = 0 // + 6
61/21*x = 6 // : 61/21
x = 6/61/21
x = 126/61
x = 126/61
| 7+5n+3=-20 | | 4y-21=2 | | 6a-4= | | -5=a/-11 | | (6v-1)(7v+3)= | | 2b-b=-4 | | -12+(-16)= | | y^7-256y^2= | | x+2(3x-1)=47 | | 8+(-36)-5=0 | | -6=4-(6-b) | | -14=4+8n+6 | | x^4-5x^3=25x^2-125x | | 0.25(420+4y)-0.5(6+2y)= | | (8-z)(5z+9)=0 | | 5/(1/3) | | 2/5x+5=9 | | 0.8x-2.2=0.2 | | x=9x+15 | | (11x/3)-X=(x/21)-(3/7) | | 2(x-1)-9=-6(-4x+3)-8x | | -9=-9+x | | 3x+7x=84 | | -3(5t-4)+5t=3t-5 | | (3x+29000000)/(x-500)=6.15 | | -4+4(4k-3)-6(2k+8)+7= | | 7n^2+12=-25n | | M/17=16/17 | | 17=t/3 | | 17=t*3 | | 4y-8=(12/q) | | 4x(2x-2)=128 |