Subtract 90/7 from 70/3
1st number: 23 1/3, 2nd number: 12 6/7
70/3 - 90/7 is 220/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
70/3 = 70 × 7/3 × 7 = 490/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
90/7 = 90 × 3/7 × 3 = 270/21 - Subtract the two like fractions:
490/21 - 270/21 = 490 - 270/21 = 220/21 - In mixed form: 1010/21
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