Subtract 49/21 from 84/10, Solve 8 4/10

Subtract 49/21 from 84/10

1^st number: 8 4/10, 2^nd number: 2 7/21

84/10 - 49/21 is 91/15.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 21 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 10 × 21 = 210,
84/10 = 84 × 21/10 × 21 = 1764/210
Likewise, for the 2nd fraction, since 21 × 10 = 210,
49/21 = 49 × 10/21 × 10 = 490/210
Subtract the two like fractions:
1764/210 - 490/210 = 1764 - 490/210 = 1274/210
After reducing the fraction, the answer is 91/15
In mixed form: 61/15

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