Subtract 96/90 from 21/56
1st number: 21/56, 2nd number: 1 6/90
21/56 - 96/90 is -83/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 90 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
21/56 = 21 × 45/56 × 45 = 945/2520 - Likewise, for the 2nd fraction, since 90 × 28 = 2520,
96/90 = 96 × 28/90 × 28 = 2688/2520 - Subtract the two like fractions:
945/2520 - 2688/2520 = 945 - 2688/2520 = -1743/2520 - After reducing the fraction, the answer is -83/120
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