exam Maths Puzzle Numerical Ability

i need help with this problem:

n-3 n-4
---=---
n+5 n+3

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exam Other Question

hello, please can you help me solve this. √2x+1=3 I got confused, ABCD is a parallelogram with diagonals that intersect at point E. If AE= x2 and if EC= 6x - 8 then find the possiable lengths of AC