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explain how you you can tell 4/9 is in the simplest form

Sagot :

Because it cannot be reduced any further.
Because this i s what my teacher taught me

What it's divisible by

2x 4 is divisible but not 9
3x none are divisible by three
4x only 4
And you only go up to the numerator there for 4/9 is in simplest form