exam Maths Puzzle Numerical Ability

Can you help me subtract the expression? PLEASE!!

2/5w+10 - 3/2w-4

Thank you! These are sooo confusing!

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exam Other Question

Convert the rectangular point (-8,8sqrt3) to polar coordinates with r>0.
Also give two additional ways to represent this point in polar coordinates
for which r<0 and -2pi0 and -2pi sketch a graph of each rational function. Show all asymptotes and/or holes.
1. y=(4)/(x^2-1)
2. y=(3x)/(x^2-3x)