exam Maths Puzzle Numerical Ability

I am trying to help my granddaughter and need to explane this to her.

x + 4 = y -2 y = x + x + x

I got x = 2 and y = 6 but was told it was wrong. Help Please

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exam Other Question

Translate the following statement into an algebraic equation. Let x represent the number.times a number that is 14 more than that number. is it the same as irratinal roots?where you have to simplyify [u must have a perfect square?]like 4 example: /72