exam Maths Puzzle Numerical Ability

Translate the following statement into an algebraic equation. Let x represent the number.times a number that is 14 more than that number.

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My question has to be solved using elimination. The two equations in the question are:
5x+2y=18 and,
3x+2y=10.

How can I solve this and what is the correct answer?
Thank you!
Amber Robinson
Simplify the expression. Write your answer in scientific notation.



(2.6 x 10^5)^2

Help with this question would be greatly appreciated.