I think the question is: solve for "a"
so what we are going to do is to bring a's term in one side and the other terms in the other side...as follows:
6 = 4a - 4 - 6
6 = 4a - 10 add 10 to both sides
6 + 10 = 4a - 10 + 10
16 = 4a divide both sides by 4
16/4 = 4a/4
4 = a
Therefore the value of a would be
4I hope you got
the idea!