Square Both Sides: Square both sides of the equation to eliminate the square roots.(9+7c)2=(8c)29+7c=8c
Subtract to Isolate: Subtract 7c from both sides to isolate the variable c on one side.9+7c−7c=8c−7c9=c
Check Solution: Check the solution by substituting c back into the original equation.9+7×9=8×99+63=7272=72This confirms that the solution is correct.