If it's not what You are looking for type in the equation solver your own equation and let us solve it.
51=x-12
We move all terms to the left:
51-(x-12)=0
We get rid of parentheses
-x+12+51=0
We add all the numbers together, and all the variables
-1x+63=0
We move all terms containing x to the left, all other terms to the right
-x=-63
x=-63/-1
x=+63
| (x+8)/2=6 | | 2a+5a+4a+5a+3a+5a=720 | | x+20+3x+20+4x-10=270 | | h/4−2=4 | | x+20+3x20+4x-10=270 | | -5x-13=68 | | u/8+21=25 | | 1-x=4(x-5)+11 | | 5(x-2)+2x=7(x+4)-38- | | 5/4+x/4=6 | | 0.08x+0.09(x+2000)=800 | | 21+x=-68 | | –3w+1=1+7w | | 10x-80=40 | | 12x-5=8x+27 | | x+283=24 | | H(0)=-4.9x^2-+8x+5 | | 283x=24 | | 7(x+3)=3(x-4) | | 5x^2+3x-1800=0 | | (X)(x+6)=112 | | -4(t-7)-(t+3)=3 | | 5x^2+3x+1800=0 | | -4(t-7)-(t-3)=3 | | 1+2(x-8)=4-6(x-6) | | (1440000-x)*0.6=6000000 | | 3×2n=192 | | 53b-4=8b+2 | | 5-(8x+5)=6-x | | 2×10n=2000 | | 2×10n=2,000 | | 7-5y=-5 |