exam Maths Puzzle Numerical Ability

Divide the following:

x^-49y^ over 6x^+42y divided by (x^-7xy)

Any help you can offer would be appreciated.
Thanks,

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exam Other Question

solve
3y = -60
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4 Perform the indicated operations. Write fractional answers as mixed numbers or as proper fractions educed to lowest terms.

-3-(-4)- /4-7/