exam Maths Puzzle Numerical Ability

x over x^2+2x+1 + 1 over x^2+5x+4=

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exam Other Question

Would someone check this for me and see if it is correct? I do apreciate it and thank you so much.

Add -3/5 + (8/35)

My answer is -13/35 there are 3 roads connecting town A and B, and 4 roads connecting towns B and C. how many different routes are there from town A to town C?