Subtract 21/5 from 2/72
1st number: 2/72, 2nd number: 4 1/5
2/72 - 21/5 is -751/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 5 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
2/72 = 2 × 5/72 × 5 = 10/360 - Likewise, for the 2nd fraction, since 5 × 72 = 360,
21/5 = 21 × 72/5 × 72 = 1512/360 - Subtract the two like fractions:
10/360 - 1512/360 = 10 - 1512/360 = -1502/360 - After reducing the fraction, the answer is -751/180
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