Subtract 90/70 from 21/3
1st number: 7 0/3, 2nd number: 1 20/70
21/3 - 90/70 is 40/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 3 × 70 = 210,
21/3 = 21 × 70/3 × 70 = 1470/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
90/70 = 90 × 3/70 × 3 = 270/210 - Subtract the two like fractions:
1470/210 - 270/210 = 1470 - 270/210 = 1200/210 - After reducing the fraction, the answer is 40/7
- In mixed form: 55/7
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