exam Maths Puzzle Numerical Ability

The average of two numbers is 7. Find the numbers if three times one of the numbers is one half the other number.



I can not figure ths out. I can not get it written into two equations.

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exam Other Question

Describe what the graph of interval [-4, 10] looks like 1. Simplify 4x[(7x^2+2x-5)+(3x^2+9x)/3x]

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