Subtract 21/72 from 42/9
1st number: 4 6/9, 2nd number: 21/72
42/9 - 21/72 is 35/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
42/9 = 42 × 8/9 × 8 = 336/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
21/72 = 21 × 1/72 × 1 = 21/72 - Subtract the two like fractions:
336/72 - 21/72 = 336 - 21/72 = 315/72 - After reducing the fraction, the answer is 35/8
- In mixed form: 43/8
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