Subtract 4/49 from 80/30, Solve 2 20/30

Subtract 4/49 from 80/30

1^st number: 2 20/30, 2^nd number: 4/49

80/30 - 4/49 is 380/147.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 49 is 1470

Next, find the equivalent fraction of both fractional numbers with denominator 1470
For the 1st fraction, since 30 × 49 = 1470,
80/30 = 80 × 49/30 × 49 = 3920/1470
Likewise, for the 2nd fraction, since 49 × 30 = 1470,
4/49 = 4 × 30/49 × 30 = 120/1470
Subtract the two like fractions:
3920/1470 - 120/1470 = 3920 - 120/1470 = 3800/1470
After reducing the fraction, the answer is 380/147
In mixed form: 286/147

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