book Maths Puzzle Numerical Ability

if x=5 what is 2x+5/x

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book Other Question
find the slope and y intercept of the line and graph

x + y = 0

Thanks The Set of numbers A={2,3,4,5} and an operations called *. Results for * are given below

* 2 3 4 5
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2| 3 2 3 4
3| 2 3 4 5
4| 3