If it's not what You are looking for type in the equation solver your own equation and let us solve it.
6x+21=51=x=
We move all terms to the left:
6x+21-(51)=0
We add all the numbers together, and all the variables
6x-30=0
We move all terms containing x to the left, all other terms to the right
6x=30
x=30/6
x=5
| X-2/6+1=3x-1/2-0 | | (x-3)^2+4=0 | | 3x=2/14 | | 0.1-0.5x+0.7=0.4x-3 | | 3x+18-4x=10 | | 10x+20=(21x+1)=(7x+17) | | 12x=15x=3 | | -1.76(z-9)=-1.76 | | 10x+20=14x-16 | | 74x=14 | | 2z=-8/9= | | 5x-6=8x+22 | | C(x)=0.09x+12.75 | | -5.51+-3p=-17.51 | | x-12+6x-2=5x2+7x+66 | | 3x2-15=348 | | 6x-4=5x-11 | | 4x2-107=-7 | | x+(x+2)+(+4)+(x+6)=56 | | 63(x+12)=180 | | -4d+58=-2 | | Y=-16x^2+54 | | 23.96+857.6-45.9=a | | 499.95+37.50=x | | .3x(x)=90 | | 12+3.4+87.5+15=d | | b=798.7-499.5 | | 4+2m=3(m-2)+1 | | 10x+x=40 | | 3x+6x=120 | | 43-3d=16 | | 52-4=4d |