Subtract 70/10 from 14/21, Solve 14/21

Subtract 70/10 from 14/21

1^st number: 14/21, 2^nd number: 7 0/10

14/21 - 70/10 is -19/3.

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

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 21 × 10 = 210,
14/21 = 14 × 10/21 × 10 = 140/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
70/10 = 70 × 21/10 × 21 = 1470/210
Subtract the two like fractions:
140/210 - 1470/210 = 140 - 1470/210 = -1330/210
After reducing the fraction, the answer is -19/3

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