Subtract 3/45 from 81/7, Solve 11 4/7

Subtract 3/45 from 81/7

1^st number: 11 4/7, 2^nd number: 3/45

81/7 - 3/45 is 1208/105.

Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 7 × 45 = 315,
81/7 = 81 × 45/7 × 45 = 3645/315
Likewise, for the 2nd fraction, since 45 × 7 = 315,
3/45 = 3 × 7/45 × 7 = 21/315
Subtract the two like fractions:
3645/315 - 21/315 = 3645 - 21/315 = 3624/315
After reducing the fraction, the answer is 1208/105
In mixed form: 1153/105

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