Subtract 20/72 from 90/12
1st number: 7 6/12, 2nd number: 20/72
90/12 - 20/72 is 65/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
90/12 = 90 × 6/12 × 6 = 540/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
20/72 = 20 × 1/72 × 1 = 20/72 - Subtract the two like fractions:
540/72 - 20/72 = 540 - 20/72 = 520/72 - After reducing the fraction, the answer is 65/9
- In mixed form: 72/9
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