Subtract 3/9 from 70/49, Solve 1 21/49

Subtract 3/9 from 70/49

1^st number: 1 21/49, 2^nd number: 3/9

70/49 - 3/9 is 23/21.

Find the least common denominator or LCM of the two denominators:
LCM of 49 and 9 is 441

Next, find the equivalent fraction of both fractional numbers with denominator 441
For the 1st fraction, since 49 × 9 = 441,
70/49 = 70 × 9/49 × 9 = 630/441
Likewise, for the 2nd fraction, since 9 × 49 = 441,
3/9 = 3 × 49/9 × 49 = 147/441
Subtract the two like fractions:
630/441 - 147/441 = 630 - 147/441 = 483/441
After reducing the fraction, the answer is 23/21
In mixed form: 12/21

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