exam Maths Puzzle Numerical Ability

y = |x|

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exam Other Question

please advise, how do you figure out negative 1/4 to the negative 3 power? one number is 12 more then another, the sum of the smaller number and twice the larger number is 39 find the large number x= the first number and y= the second number so is it 12 + x = y or 2x +y = 32