exam Maths Puzzle Numerical Ability

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Can you help me with this math problem?Thanks.
17.Decompose into partial fractions.

2x^2-24x+35/(x^2+2x-7)(x-2)

Answer: 7x/x^2+2x-7 - 5/x-2

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exam Other Question

My question is or my problem is: 25 4/5 3/5 +3
_____________ =
24 A student claims that the equation 5x = 4x is a contradiction, since dividing both sides by x leads to 5 = 4, a false statement. Explain why the student is incorrect.