Subtract 70/60 from 2/21, Solve 2/21

Subtract 70/60 from 2/21

1^st number: 2/21, 2^nd number: 1 10/60

2/21 - 70/60 is -15/14.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 21 × 20 = 420,
2/21 = 2 × 20/21 × 20 = 40/420
Likewise, for the 2nd fraction, since 60 × 7 = 420,
70/60 = 70 × 7/60 × 7 = 490/420
Subtract the two like fractions:
40/420 - 490/420 = 40 - 490/420 = -450/420
After reducing the fraction, the answer is -15/14

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