exam Maths Puzzle Numerical Ability

A=1/2h for h

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exam Other Question

I am trying to figure out the balance of a college fund after 10 years if I invest $5000 at 3% compounded quarterly. I think I get scared of fractions and algebra. Can you help with this? Thanks!

solve for x:

13/x-1 = 4/x + 2

any assitance would be appreciated.