Subtract 21/30 from 63/7, Solve 9 0/7

Subtract 21/30 from 63/7

1^st number: 9 0/7, 2^nd number: 21/30

63/7 - 21/30 is 83/10.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 7 × 30 = 210,
63/7 = 63 × 30/7 × 30 = 1890/210
Likewise, for the 2nd fraction, since 30 × 7 = 210,
21/30 = 21 × 7/30 × 7 = 147/210
Subtract the two like fractions:
1890/210 - 147/210 = 1890 - 147/210 = 1743/210
After reducing the fraction, the answer is 83/10
In mixed form: 83/10

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