Subtract 90/45 from 42/56
1st number: 42/56, 2nd number: 2 0/45
42/56 - 90/45 is -5/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 45 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
42/56 = 42 × 45/56 × 45 = 1890/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
90/45 = 90 × 56/45 × 56 = 5040/2520 - Subtract the two like fractions:
1890/2520 - 5040/2520 = 1890 - 5040/2520 = -3150/2520 - After reducing the fraction, the answer is -5/4
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Related: 84/56-90/45