exam Maths Puzzle Numerical Ability

one number is 6 less than a second number, twice the second number is 39 more than 5 times the second number. find the two numbers

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exam Other Question

Simplify the Expression

19.26/15n + (-8/15n)

Any help this equation would be GREALTY</b> appreciated.
35. Not involving y in expression of ( [1/y3) + y2]

(****Please note the first y is to the power of 3 and the second y is to the power of 2****)

Thank you in advance!