exam Maths Puzzle Numerical Ability

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.

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exam Other Question
Given: segmant FC is parallel to segment ED
Segment FE is parallel to segment CD

Prove: triangle FEC is congruent to triangle DCE I hope someone can help me solve this problem:

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

Thanks,
Ashley