Subtract 21/54 from 70/49, Solve 1 21/49

Subtract 21/54 from 70/49

1^st number: 1 21/49, 2^nd number: 21/54

70/49 - 21/54 is 131/126.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 54 is 2646

Next, find the equivalent fraction of both fractional numbers with denominator 2646
For the 1st fraction, since 49 × 54 = 2646,
70/49 = 70 × 54/49 × 54 = 3780/2646
Likewise, for the 2nd fraction, since 54 × 49 = 2646,
21/54 = 21 × 49/54 × 49 = 1029/2646
Subtract the two like fractions:
3780/2646 - 1029/2646 = 3780 - 1029/2646 = 2751/2646
After reducing the fraction, the answer is 131/126
In mixed form: 15/126

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