6g+11-2g=16.6
We move all terms to the left:
6g+11-2g-(16.6)=0
We add all the numbers together, and all the variables
4g-5.6=0
We move all terms containing g to the left, all other terms to the right
4g=5.6
g=5.6/4
g=1+1/2.5
