Subtract 40/30 from 90/7
1st number: 12 6/7, 2nd number: 1 10/30
90/7 - 40/30 is 242/21.
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,
40/30 = 40 × 7/30 × 7 = 280/210 - Subtract the two like fractions:
2700/210 - 280/210 = 2700 - 280/210 = 2420/210 - After reducing the fraction, the answer is 242/21
- In mixed form: 1111/21
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