exam Maths Puzzle Numerical Ability

Prove using your knowlegde of combinations, summation notation and fractionals each of the following: (sorry, this is one question in my work, I am not sure if it is considered two

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exam Other Question

Write as an algebraic expression: two plus the product of 5 and m .
If you could tell me the answer and explain it. I would appreciate it. Thanks Find the sum or difference.

13.-1 2/11 + (-3 5/11)

Any help would be GREATLY</b> appreciated.