Question

Solve for k f= g-h+k:2

Answer 1

$g-h+k:2=f\qquad|-g\\\\-h+\dfrac{k}{2}=f-g\qquad|+h\\\\\dfrac{k}{2}=f-g+h\qquad|\cdot2\\\\k=2(f-g+h)\to k=2f-2g+2h$