Subtract 10/30 from 90/7
1st number: 12 6/7, 2nd number: 10/30
90/7 - 10/30 is 263/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
90/7 = 90 × 30/7 × 30 = 2700/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
10/30 = 10 × 7/30 × 7 = 70/210 - Subtract the two like fractions:
2700/210 - 70/210 = 2700 - 70/210 = 2630/210 - After reducing the fraction, the answer is 263/21
- In mixed form: 1211/21
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