Subtract 70/49 from 20/72
1st number: 20/72, 2nd number: 1 21/49
20/72 - 70/49 is -145/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 49 is 3528
Next, find the equivalent fraction of both fractional numbers with denominator 3528 - For the 1st fraction, since 72 × 49 = 3528,
20/72 = 20 × 49/72 × 49 = 980/3528 - Likewise, for the 2nd fraction, since 49 × 72 = 3528,
70/49 = 70 × 72/49 × 72 = 5040/3528 - Subtract the two like fractions:
980/3528 - 5040/3528 = 980 - 5040/3528 = -4060/3528 - After reducing the fraction, the answer is -145/126
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