exam Maths Puzzle Numerical Ability

2/5x-6=12

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exam Other Question

x+4 over 3x + 4y times 9x squard - 16y squared over 2x squared + 5x - 12 The square of the sum of two consecutive integers is 529. What are the integers?

x = 1st integer
x + 1 = 2nd integer

(x + (x + 1))2 = 529
2x2 = 528
x2 = 264
x = 16.24....

Answer should be 11 and 12.