exam Maths Puzzle Numerical Ability

I hope someone can help me solve this problem:

I need to perform the indicated operation:
11-6/7-7

Thanks,
Ashley

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exam Other Question

the sum of the digit of a two digit no. is 15if the no. formed by reversing the digit is less than the original no. by 27.find the original no. The produce of x and the square of y is t.
I put (x)y^2=t is that correct?