C=5/9(18)

To solve this equation, start by simplifying the expression on the right side of the equation:

C = 5/9 * 18

First, multiply the 5/9 by 18:

C = (5 * 18) / 9

C = 90 / 9

Next, divide 90 by 9:

C = 10

Therefore, C = 10.