Subtract 21/72 from 18/5
1st number: 3 3/5, 2nd number: 21/72
18/5 - 21/72 is 397/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 5 × 72 = 360,
18/5 = 18 × 72/5 × 72 = 1296/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Subtract the two like fractions:
1296/360 - 105/360 = 1296 - 105/360 = 1191/360 - After reducing the fraction, the answer is 397/120
- In mixed form: 337/120
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