exam Maths Puzzle Numerical Ability

Solve the system of equations: (hint: let (1/x)=t and (1/y)=u)

(2/x)+(1/y)=11
(3/x)-(5/y)=10

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exam Other Question

could you please tell me how you write the following?

subtract 2 from m
divide x by 2
multiply p by 7

Thank you for your help

S Sheppard To prove triangle DEF is congruent to triangle GHK by the SSS Postulate, you must first show that _____, _____, and _____.

Please help. I don't get what they are asking for th