Subtract 21/72 from 90/49
1st number: 1 41/49, 2nd number: 21/72
90/49 - 21/72 is 1817/1176.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 72 is 3528
Next, find the equivalent fraction of both fractional numbers with denominator 3528 - For the 1st fraction, since 49 × 72 = 3528,
90/49 = 90 × 72/49 × 72 = 6480/3528 - Likewise, for the 2nd fraction, since 72 × 49 = 3528,
21/72 = 21 × 49/72 × 49 = 1029/3528 - Subtract the two like fractions:
6480/3528 - 1029/3528 = 6480 - 1029/3528 = 5451/3528 - After reducing the fraction, the answer is 1817/1176
- In mixed form: 1641/1176
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