exam Maths Puzzle Numerical Ability

I am having trouble dividing fractions. Can someone please help me.

3 1/5+ 2 1/4

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exam Other Question

What is the GCF for the polynomial 4x^3 - 2x^2y? use cramers rule or to determine that the system is inconsistent or contains dependent equations:

2x+y=3
x-y=3