No.
-22/9 is a fraction with integer numerator and denominator. That is the definition of a rational number. When written in decimal form, it is an infinitely repeating decimal with a single repeating digit: 4. Any repeating decimal is a rational number. It is only irrational if it doesn't repeat.
Where is this triangle you speak of
Answer:
You can use 5 to simplify 5 and 15, giving you 1 and 3
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