Here's what i found online:
a/3+4=6
We simplify the equation to the form, which is simple to understand
a/3+4=6
Simplifying:
+ 0.333333333333a+4=6
We move all terms containing a to the left and all other terms to the right.
+ 0.333333333333a=+6-4
We simplify left and right side of the equation.
+ 0.333333333333a=+2
We divide both sides of the equation by 0.333333333333 to get a.
a=6
Hope this helped :-)