If it's not what You are looking for type in the equation solver your own equation and let us solve it.
2a+140=180
We move all terms to the left:
2a+140-(180)=0
We add all the numbers together, and all the variables
2a-40=0
We move all terms containing a to the left, all other terms to the right
2a=40
a=40/2
a=20
| t+37=969 | | 30=r/28 | | 960=u+307 | | 19v=551 | | s-3=410 | | 20f=1000 | | 562=q+306 | | c+331=673 | | b-52=298 | | s+18=971 | | 794=u+492 | | p-551=137 | | q+175=483 | | a+9=-3a-7 | | 985=5t | | q/11=24 | | 762=s+80 | | 95=t+17 | | 10f=40 | | x-5+2x=50 | | 5(7+r)=65 | | 25=s+30 | | c+7=89 | | 36=y+40 | | 40=x-13 | | 19=t-4 | | 21=s+23 | | 35=z-5 | | 25=10+y | | 12x-7=17x-16 | | -39-7b=-5(6b-6) | | 3(x-5)+3=10+5x |