Subtract 72/28 from 7/90
1st number: 7/90, 2nd number: 2 16/28
7/90 - 72/28 is -1571/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 28 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
7/90 = 7 × 14/90 × 14 = 98/1260 - Likewise, for the 2nd fraction, since 28 × 45 = 1260,
72/28 = 72 × 45/28 × 45 = 3240/1260 - Subtract the two like fractions:
98/1260 - 3240/1260 = 98 - 3240/1260 = -3142/1260 - After reducing the fraction, the answer is -1571/630
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