Subtract 20/72 from 70/9
1st number: 7 7/9, 2nd number: 20/72
70/9 - 20/72 is 15/2.
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,
70/9 = 70 × 8/9 × 8 = 560/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
20/72 = 20 × 1/72 × 1 = 20/72 - Subtract the two like fractions:
560/72 - 20/72 = 560 - 20/72 = 540/72 - After reducing the fraction, the answer is 15/2
- In mixed form: 71/2
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