If it's not what You are looking for type in the equation solver your own equation and let us solve it.
8a-5a-a=18
We move all terms to the left:
8a-5a-a-(18)=0
We add all the numbers together, and all the variables
2a-18=0
We move all terms containing a to the left, all other terms to the right
2a=18
a=18/2
a=9
| 8x/9=180° | | 3p+4p-p-1=17 | | 18x/3/4=15 | | 5x-8(2x-10)=-8 | | 2x+10-x=0 | | 5/7x+3=18 | | 0=2x+x-70 | | 82+(15x+53)=180 | | t.t/4-3=0 | | tt/4-3=0 | | t(4)=8t(10)=32 | | 111=14h | | -30-(x/6)=-12 | | 4x(x+1)=143 | | r.r/9+2=-1 | | 4x^2+64x-900=0 | | (x-2)180=5400 | | 5+a=-9 | | (4x+8)+(5x-8)=90 | | rr/9+2=-1 | | n+257=749 | | -23=-7x-23 | | p3p-4=8 | | 15+(5-x(/x))=30 | | 162=72x | | -5+x/2=-13 | | 42=-3(22-x)+3(x-2) | | n-5n+6=31 | | 6(4x-9)-6=6(x-2)+78 | | 2/3/m=12 | | F(n)=50(5/9) | | 20+x-10=14 |