Answer:
a = j - g
Explanation:
"solve for a" means to get a all by itself on one side of the equation. You can see the beginning of the answer that is provided on your screen says "a = "
We are starting with:
j = g + a
First, subtract g from both sides of the equation.
j - g = a
Now just trade the left and right sides of the equation.
a = j - g
Fill in your answer in the box: j - g