exam Maths Puzzle Numerical Ability

each box weighs 3 1/6 and there are 6 boxes in all what is the total weight?

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exam Other Question

Homework example. Please show me how to solve this complex fraction. Thanks!

(3/x-2)+(21/x^2-4)=(14/x+2)
Please help me solve this equation: (x-1)/(x+2) > 0