Subtract 42/30 from 75/21
1st number: 3 12/21, 2nd number: 1 12/30
75/21 - 42/30 is 76/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
75/21 = 75 × 10/21 × 10 = 750/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
42/30 = 42 × 7/30 × 7 = 294/210 - Subtract the two like fractions:
750/210 - 294/210 = 750 - 294/210 = 456/210 - After reducing the fraction, the answer is 76/35
- In mixed form: 26/35
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