Subtract 20/7 from 70/72
1st number: 70/72, 2nd number: 2 6/7
70/72 - 20/7 is -475/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 7 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
70/72 = 70 × 7/72 × 7 = 490/504 - Likewise, for the 2nd fraction, since 7 × 72 = 504,
20/7 = 20 × 72/7 × 72 = 1440/504 - Subtract the two like fractions:
490/504 - 1440/504 = 490 - 1440/504 = -950/504 - After reducing the fraction, the answer is -475/252
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