Subtract 42/90 from 40/15
1st number: 2 10/15, 2nd number: 42/90
40/15 - 42/90 is 11/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
40/15 = 40 × 6/15 × 6 = 240/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
42/90 = 42 × 1/90 × 1 = 42/90 - Subtract the two like fractions:
240/90 - 42/90 = 240 - 42/90 = 198/90 - After reducing the fraction, the answer is 11/5
- In mixed form: 21/5
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