Simplify by removing factor 1. 9t^2 +9t / 63t^2 + 81t?

Question

I can not figure this out. Can someone help please?

Answer 1

= (9t² + 9t)/(63t² + 81t)

= (9t[t + 1])/(9t[7t + 9])

= (t + 1)/(7t + 9)

Answer: (t + 1)/(7t + 9])

Answer 2

(9t^2 +9t) / (63t^2 + 81t)

= 9t*(t+1)/{9t*(7t + 9)}

= (t+1)/(7t + 9)

Answer 3

9t (t + 1)

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9t (7t + 9)

(t + 1)

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(7t + 9)