Subtract 56/49 from 10/30, Solve 10/30

Subtract 56/49 from 10/30

1^st number: 10/30, 2^nd number: 1 7/49

10/30 - 56/49 is -17/21.

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,
10/30 = 10 × 49/30 × 49 = 490/1470
Likewise, for the 2nd fraction, since 49 × 30 = 1470,
56/49 = 56 × 30/49 × 30 = 1680/1470
Subtract the two like fractions:
490/1470 - 1680/1470 = 490 - 1680/1470 = -1190/1470
After reducing the fraction, the answer is -17/21

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