exam Maths Puzzle Numerical Ability

Can someone help me solve this problem?
I need this problem to be evaluate:

|4| + |-3|

Thanks,
Sher

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exam Other Question

x^-1 + y^-1/x^-1

simplify write the answers with all exponents positive {(2,4),(3,5),(4,6),(5,8)} State whether each relation is a function.