Ax+z=aw-y for a

man i hate math ngl- please send help

Subtract z first and aw from the equation to isolate the a terms while keeping the equation balanced.

ax-aw= -y-z

Then factor an a from each term.

a(x-w)=-y-z

Now, divide each side of the equation by x-w.

a = -y-z/x-w

Multiply the right side of the equation by a form of 1 to rewrite the expression.
The picture linked is the answer.