Subtract 54/9 from 72/7, Solve 10 2/7

Subtract 54/9 from 72/7

1^st number: 10 2/7, 2^nd number: 6 0/9

72/7 - 54/9 is 30/7.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63

Next, find the equivalent fraction of both fractional numbers with denominator 63
For the 1st fraction, since 7 × 9 = 63,
72/7 = 72 × 9/7 × 9 = 648/63
Likewise, for the 2nd fraction, since 9 × 7 = 63,
54/9 = 54 × 7/9 × 7 = 378/63
Subtract the two like fractions:
648/63 - 378/63 = 648 - 378/63 = 270/63
After reducing the fraction, the answer is 30/7
In mixed form: 42/7

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