Answer:

Explanation:
To solve this problem, first you have to isolate it on one side of the equation. Remember to simplify, subtraction property of equality is subtracting both sides of an equation by the same number it doesn't change the equation.
First, subtract 6 from both sides.

Solve.


Next, multiply 5 from both sides.

Solve.


Then, divide by 2 from both sides.

Solve.

In conclusion, the correct answer is c=15.
Hope this helps!
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