Subtract 42/15 from 90/2
1st number: 45 0/2, 2nd number: 2 12/15
90/2 - 42/15 is 211/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 15 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 2 × 15 = 30,
90/2 = 90 × 15/2 × 15 = 1350/30 - Likewise, for the 2nd fraction, since 15 × 2 = 30,
42/15 = 42 × 2/15 × 2 = 84/30 - Subtract the two like fractions:
1350/30 - 84/30 = 1350 - 84/30 = 1266/30 - After reducing the fraction, the answer is 211/5
- In mixed form: 421/5
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