exam Maths Puzzle Numerical Ability

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Page 490
Number 14

5x-3y=14
2x-y=6

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exam Other Question

The direct distance between city A and city B is 200 miles. The direct distance between city B and city C is 300 miles. Which could be the direct distance city C and city A? Multiply and Simplify: x^2-7x+12/x^2-6x+8 * x^2+6x+8/x^2-x-6