Subtract 4/40 from 70/21
1st number: 3 7/21, 2nd number: 4/40
70/21 - 4/40 is 97/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 21 × 40 = 840,
70/21 = 70 × 40/21 × 40 = 2800/840 - Likewise, for the 2nd fraction, since 40 × 21 = 840,
4/40 = 4 × 21/40 × 21 = 84/840 - Subtract the two like fractions:
2800/840 - 84/840 = 2800 - 84/840 = 2716/840 - After reducing the fraction, the answer is 97/30
- In mixed form: 37/30
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