<u><em>c=3/2 is the final answer. </em></u>First, you had to divide by two (2) from both sides of equation, and it gave us ⇒ . And secondly, you had to simplify, and it gave us ⇒. Next, you had to add by seven (7) from both sides of equation, and it gave us ⇒. Therefore, you can also simplify, and it gave us ⇒. In fact, you divide by five (5) from both sides of equation, and it gave us ⇒. And finally, simplify it's should be the final answer is c=3/2 is the final answer. Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie