Subtract 90/21 from 70/3
1st number: 23 1/3, 2nd number: 4 6/21
70/3 - 90/21 is 400/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 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 21 × 1 = 21,
90/21 = 90 × 1/21 × 1 = 90/21 - Subtract the two like fractions:
490/21 - 90/21 = 490 - 90/21 = 400/21 - In mixed form: 191/21
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