Subtract 30/70 from 70/9, Solve 7 7/9

Subtract 30/70 from 70/9

1^st number: 7 7/9, 2^nd number: 30/70

70/9 - 30/70 is 463/63.

Find the least common denominator or LCM of the two denominators:
LCM of 9 and 70 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 9 × 70 = 630,
70/9 = 70 × 70/9 × 70 = 4900/630
Likewise, for the 2nd fraction, since 70 × 9 = 630,
30/70 = 30 × 9/70 × 9 = 270/630
Subtract the two like fractions:
4900/630 - 270/630 = 4900 - 270/630 = 4630/630
After reducing the fraction, the answer is 463/63
In mixed form: 722/63

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