Subtract 90/30 from 45/56
1st number: 45/56, 2nd number: 3 0/30
45/56 - 90/30 is -123/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 30 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 56 × 15 = 840,
45/56 = 45 × 15/56 × 15 = 675/840 - Likewise, for the 2nd fraction, since 30 × 28 = 840,
90/30 = 90 × 28/30 × 28 = 2520/840 - Subtract the two like fractions:
675/840 - 2520/840 = 675 - 2520/840 = -1845/840 - After reducing the fraction, the answer is -123/56
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