If it's not what You are looking for type in the equation solver your own equation and let us solve it.
6a-2+2a+4=90
We move all terms to the left:
6a-2+2a+4-(90)=0
We add all the numbers together, and all the variables
8a-88=0
We move all terms containing a to the left, all other terms to the right
8a=88
a=88/8
a=11
| 32=28+y | | 6b-12=36 | | 100=6x+10 | | 8+p=40 | | b/2+32=25 | | 06x-2.9=7 | | 44=w+67 | | -7-6w+12=-39+2 | | 40/p=8 | | z/2=3.1 | | 3/5=x/4+x/2 | | 3b−38=31 | | -4=-y/3+6 | | m+(2m-4)=14 | | V(x)=7x²-42x+72. | | t-~41=67 | | m+2m-5=14 | | 20-(-12)=n | | n/3−11=–9 | | 0.06x+1.1=4.7 | | -3m-4.6=5.9 | | d/4+15=20 | | 10x+7=13x-17 | | −10y+9y=12 | | d4+ 15=20 | | s-3=78 | | 640=-40(-9x+-10) | | 3-4d=-13 | | 0.02y+0.1=0.06y-0.3 | | p/2=2.47 | | 4+m=27 | | 14=4(x-2)+6-2x |