exam Maths Puzzle Numerical Ability

How do i do a proportion and what is a proportion? For example. 7/6, 52/48. If that is a proportion?

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solve using the addition method,answer must be an ordered pair.
-2x=2y+5
6x+3y=3 Stateside insurance offers two health plans. Under plan 1, Lucy would have to pay the first $150 of her medical bills, plus 25% of the rest. Under plan B, Lucy would play the first