exam Maths Puzzle Numerical Ability

we are learning math, and this is one of my problems on my homework, i dont understand this problem can u break it down for me:5-2x over x + y

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exam Other Question

Find each of the following squares

(w-1/4)^2 a vending machine takes only dimes and quarters. so far the machine has only taken a total of 30 coins. the amount of money it has collected is $4.20.