exam Maths Puzzle Numerical Ability

Hi I need help with this problem

What is 7-2n=n-14?

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exam Other Question

On July 7, a married couple borrowed $2,000 from a finance company so they could take a vacation trip. If the loan was for two months, and the company charged 10% exact interest, f please help me find the area of triangle ABC if a = 40 ft., b = 25ft. and angle C = 30 degrees