If it's not what You are looking for type in the equation solver your own equation and let us solve it.
87x=12
We move all terms to the left:
87x-(12)=0
We move all terms containing x to the left, all other terms to the right
87x=12
x=12/87
x=4/29
| 4/9f=-52/4 | | -5x+2.3=(-18.8) | | x+5x+5-2x=2x+7 | | d+d+17=5 | | (M-3)(m+4)(m+1)=0 | | 3/4/12/16=36/x | | | | 10=18+4(3x+7 | | 51+c=54 | | 1-7(n-5)=92 | | | | | | | | | | | | | | | | | | | | {0.2(6x+1)}/0.4=0.5x | | | | 7x=53/9=2 | | d+d+22=6 | | | | {0.2(6x+1)}/4=0.5x | | g+68/31=6 | | 10x+42=18 | | 6.2x+5=4.6x-7 | | |2x-5|+6=-6 | | | | | | |