Subtract 9/7 from 42/70
1st number: 42/70, 2nd number: 1 2/7
42/70 - 9/7 is -24/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
42/70 = 42 × 1/70 × 1 = 42/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
9/7 = 9 × 10/7 × 10 = 90/70 - Subtract the two like fractions:
42/70 - 90/70 = 42 - 90/70 = -48/70 - After reducing the fraction, the answer is -24/35
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