solve for r, k=4r-7s

Question

Solve for r.

k=4r-7s or 4r-7s+7s=k+7s

Answer 1

So we need to isolate r.

k = 4r - 7s

Start by moving the other parts to the other side of the equation. Add 7s to both sides:

k + 7s = 4r - 7s + 7s

k + 7s = 4r

Now divide both sides by 4:

(k + 7s) / 4 = 4r / 4r

(k + 7s) / 4= r