exam Maths Puzzle Numerical Ability

Can somebody help me with this problem please? Simplify complex rational expressions:
2 + 3
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exam Other Question
Solve each of the following quadratic equations by completing the square.
x2 - 6x - 3 = 0 Solve each system by the addition method:

3/7x+5/9y=27

1/9x+2/7y=7