Subtract 70/36 from 21/10, Solve 2 1/10

Subtract 70/36 from 21/10

1^st number: 2 1/10, 2^nd number: 1 34/36

21/10 - 70/36 is 7/45.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 36 is 180

Next, find the equivalent fraction of both fractional numbers with denominator 180
For the 1st fraction, since 10 × 18 = 180,
21/10 = 21 × 18/10 × 18 = 378/180
Likewise, for the 2nd fraction, since 36 × 5 = 180,
70/36 = 70 × 5/36 × 5 = 350/180
Subtract the two like fractions:
378/180 - 350/180 = 378 - 350/180 = 28/180
After reducing the fraction, the answer is 7/45

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