Subtract 70/21 from 42/4
1st number: 10 2/4, 2nd number: 3 7/21
42/4 - 70/21 is 43/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
42/4 = 42 × 21/4 × 21 = 882/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
70/21 = 70 × 4/21 × 4 = 280/84 - Subtract the two like fractions:
882/84 - 280/84 = 882 - 280/84 = 602/84 - After reducing the fraction, the answer is 43/6
- In mixed form: 71/6
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