9k=639Divide each term in 9k=639 by 9.9k9=6399Cancel the common factor of 9.Tap for more steps…Cancel the common factor.9k9=6399Divide k by 1.k=6399k=6399Divide 639 by 9.k=71 Solve for k 9k=639 Solving MATH problems We can solve all math problems. Get help on the web or with our math app