Subtract 15/90 from 75/42
1st number: 1 33/42, 2nd number: 15/90
75/42 - 15/90 is 34/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
75/42 = 75 × 15/42 × 15 = 1125/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
15/90 = 15 × 7/90 × 7 = 105/630 - Subtract the two like fractions:
1125/630 - 105/630 = 1125 - 105/630 = 1020/630 - After reducing the fraction, the answer is 34/21
- In mixed form: 113/21
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