exam Maths Puzzle Numerical Ability

- 2x - 5y = 10

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exam Other Question

The length of a retangular pool is 6 meters less than twice the width. If the pools perimeter is 126 meters, what are its dimensions? What would be the correct way to do this proof?
I tried it many times and i don't know how to say what i want to say, i understand the concepts just not the way to word it.- Tha