Subtract 7/10 from 60/21, Solve 2 18/21

Subtract 7/10 from 60/21

1^st number: 2 18/21, 2^nd number: 7/10

60/21 - 7/10 is 151/70.

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,
60/21 = 60 × 10/21 × 10 = 600/210
Likewise, for the 2nd fraction, since 10 × 21 = 210,
7/10 = 7 × 21/10 × 21 = 147/210
Subtract the two like fractions:
600/210 - 147/210 = 600 - 147/210 = 453/210
After reducing the fraction, the answer is 151/70
In mixed form: 211/70

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