Subtract 90/6 from 21/5
1st number: 4 1/5, 2nd number: 15 0/6
21/5 - 90/6 is -54/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 6 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 5 × 6 = 30,
21/5 = 21 × 6/5 × 6 = 126/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
90/6 = 90 × 5/6 × 5 = 450/30 - Subtract the two like fractions:
126/30 - 450/30 = 126 - 450/30 = -324/30 - After reducing the fraction, the answer is -54/5
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