Subtract 12/7 from 40/30
1st number: 1 10/30, 2nd number: 1 5/7
40/30 - 12/7 is -8/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
40/30 = 40 × 7/30 × 7 = 280/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
12/7 = 12 × 30/7 × 30 = 360/210 - Subtract the two like fractions:
280/210 - 360/210 = 280 - 360/210 = -80/210 - After reducing the fraction, the answer is -8/21
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