Subtract 21/7 from 5/36, Solve 5/36

Subtract 21/7 from 5/36

1^st number: 5/36, 2^nd number: 3 0/7

5/36 - 21/7 is -103/36.

Find the least common denominator or LCM of the two denominators:
LCM of 36 and 7 is 252

Next, find the equivalent fraction of both fractional numbers with denominator 252
For the 1st fraction, since 36 × 7 = 252,
5/36 = 5 × 7/36 × 7 = 35/252
Likewise, for the 2nd fraction, since 7 × 36 = 252,
21/7 = 21 × 36/7 × 36 = 756/252
Subtract the two like fractions:
35/252 - 756/252 = 35 - 756/252 = -721/252
After reducing the fraction, the answer is -103/36

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