Subtract 15/70 from 63/42
1st number: 1 21/42, 2nd number: 15/70
63/42 - 15/70 is 9/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 70 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
63/42 = 63 × 5/42 × 5 = 315/210 - Likewise, for the 2nd fraction, since 70 × 3 = 210,
15/70 = 15 × 3/70 × 3 = 45/210 - Subtract the two like fractions:
315/210 - 45/210 = 315 - 45/210 = 270/210 - After reducing the fraction, the answer is 9/7
- In mixed form: 12/7
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