Subtract 21/45 from 75/72
1st number: 1 3/72, 2nd number: 21/45
75/72 - 21/45 is 23/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
75/72 = 75 × 5/72 × 5 = 375/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
21/45 = 21 × 8/45 × 8 = 168/360 - Subtract the two like fractions:
375/360 - 168/360 = 375 - 168/360 = 207/360 - After reducing the fraction, the answer is 23/40
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