Subtract 40/56 from 30/15
1st number: 2 0/15, 2nd number: 40/56
30/15 - 40/56 is 9/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 56 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 15 × 56 = 840,
30/15 = 30 × 56/15 × 56 = 1680/840 - Likewise, for the 2nd fraction, since 56 × 15 = 840,
40/56 = 40 × 15/56 × 15 = 600/840 - Subtract the two like fractions:
1680/840 - 600/840 = 1680 - 600/840 = 1080/840 - After reducing the fraction, the answer is 9/7
- In mixed form: 12/7
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