Subtract 21/56 from 70/18
1st number: 3 16/18, 2nd number: 21/56
70/18 - 21/56 is 253/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 18 × 28 = 504,
70/18 = 70 × 28/18 × 28 = 1960/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
21/56 = 21 × 9/56 × 9 = 189/504 - Subtract the two like fractions:
1960/504 - 189/504 = 1960 - 189/504 = 1771/504 - After reducing the fraction, the answer is 253/72
- In mixed form: 337/72
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