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kotykmax [81]
3 years ago
14

What is greater one seventh or one nineth

Mathematics
2 answers:
Anton [14]3 years ago
3 0

Method 1:

Look at the picture.

\dfrac{1}{7} is greater than \dfrac{1}{9}

\boxed{\dfrac{1}{7}>\dfrac{1}{9}}

Method 2:

Find the common denominator:

multiples of 7: 0, 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, ...

multiples of 9: 0, 9, 18, 27, 36, 45, 54, 63, 72, 81, 90, ...

63 = 7 · 9

\dfrac{1}{7}=\dfrac{1\cdot9}{7\cdot9}=\dfrac{9}{63}\\\\\dfrac{1}{9}=\dfrac{1\cdot7}{9\cdot7}=\dfrac{7}{63}

\dfrac{9}{63} > \dfrac{7}{63}

therefore

\dfrac{1}{7} > \dfrac{1}{9}

Naddik [55]3 years ago
3 0
One seventh is greater
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