Subtract 72/7 from 90/3
1st number: 30 0/3, 2nd number: 10 2/7
90/3 - 72/7 is 138/7.
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,
90/3 = 90 × 7/3 × 7 = 630/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
72/7 = 72 × 3/7 × 3 = 216/21 - Subtract the two like fractions:
630/21 - 216/21 = 630 - 216/21 = 414/21 - After reducing the fraction, the answer is 138/7
- In mixed form: 195/7
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