If it's not what You are looking for type in the equation solver your own equation and let us solve it.
-8x+12=84
We move all terms to the left:
-8x+12-(84)=0
We add all the numbers together, and all the variables
-8x-72=0
We move all terms containing x to the left, all other terms to the right
-8x=72
x=72/-8
x=-9
| 3(4x-2)=-12-6 | | x+((x+10)/2)=425 | | z^2+2z-12=0 | | 3/r=1/5 | | 1/3(n-15)=2 | | 6=2(b-14) | | 13–2x-2=25 | | 8n=15+12n+15 | | 2^t=6 | | 31x=-5 | | (5*3+x*3)=30 | | 0.15n+1000=108.50 | | 58+68+(5x+20)=180 | | 6+3x=5(−x+2)−28 | | 90x-20=x | | 2/5c+4/5c-6=7 | | 1+4n-6n=1-8n | | 7x+12=85 | | 38+n+68.5=149.8 | | 5x6=42-12 | | 34+4a+(3a-43)=180 | | (1/2)^4x+1=8^2x+1 | | 4x+16=-16+8x | | 2z+z^2=12 | | 338+n+68.5=149.8 | | 90-3x=45 | | 4x^2-22x+40=0 | | (12)4x+1=82x+1 | | j/2=-19 | | 94-x=173 | | 350+5x=-8x+650 | | (2y-13)+61+4y=180 |