Answers: A fraction is a perfect square if it's reduced version (of an improper fraction if the number is greater than 1) has both numerator and denominator numbers that are perfect squares. IE: 25/36 is a perfect square because both 25 and 36 are perfect squares.
Step-by-step explanation:
So for example 5/25 is a perfect square but 2/5 wouldn't be a perfect square.
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Answer:

Step-by-step explanation:

Multiply the numerator and denomiator of 1/16 by 2 so that the denominators are equal and we can subtract.

Then, subtract

Answer:
768
Step-by-step explanation:
First multiply by two
Then multiply by four
Answer:
x = 94
Step-by-step explanation:
(86 + x)/2 = 90
86 + x = 180
x = 94