Question

Solve for a. 3x=a+3/b

Answer 1

`3x=a+\frac3b\\\\-\frac3b\quad\ -\frac3b\\\\3x-\frac3b=a\\\\a=3x-\frac3b`

or, if you mean 3x=(a+3)/b :

`{}\ \ 3x=\frac{a+3}b\\\\* b\quad\ \ * b\\\\3bx=a+3\\\\-3\qquad-3\\\\3bx-3=a\\\\a=3bx-3`