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 new line of code 
 void Simplify(int [] numbers)
        {
            int gcd = GCD(numbers);
            for (int i = 0; i < numbers.Length; i++)
                numbers[i] /= gcd;
        }
        int GCD(int a, int b)
       {
            while (b>0)
            {
                int rem = a % b;
                a = b;
                b = rem;
            }
            return a;
        }
        int GCD(int[] args)
        {
            return args.Aggregate((gcd, arg) => GCD(gcd, arg));
        }        
    }

}

cant seem to get this to work any suggestions on where i could place this Thanks

 new line of code 
 void Simplify(int [] numbers)
        {
            int gcd = GCD(numbers);
            for (int i = 0; i < numbers.Length; i++)
                numbers[i] /= gcd;
        }
        int GCD(int a, int b)
       {
            while (b>0)
            {
                int rem = a % b;
                a = b;
                b = rem;
            }
            return a;
        }
        int GCD(int[] args)
        {
            return args.Aggregate((gcd, arg) => GCD(gcd, arg));
        }        
    }

}

cant seem to get this to work any suggestions on where i could place this Thanks

\$\dfrac{3}{4} * \dfrac{8}{15}\$ and the output would be \$\dfrac{2}{5}\$.

\$\dfrac{3}{4} \times \dfrac{8}{15}\$ and the output would be \$\dfrac{2}{5}\$.