Subtract 7/90 from 36/21
1st number: 1 15/21, 2nd number: 7/90
36/21 - 7/90 is 1031/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 21 × 30 = 630,
36/21 = 36 × 30/21 × 30 = 1080/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
7/90 = 7 × 7/90 × 7 = 49/630 - Subtract the two like fractions:
1080/630 - 49/630 = 1080 - 49/630 = 1031/630 - In mixed form: 1401/630
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