Subtract 42/7 from 45/25
1st number: 1 20/25, 2nd number: 6 0/7
45/25 - 42/7 is -21/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 7 is 175
Next, find the equivalent fraction of both fractional numbers with denominator 175 - For the 1st fraction, since 25 × 7 = 175,
45/25 = 45 × 7/25 × 7 = 315/175 - Likewise, for the 2nd fraction, since 7 × 25 = 175,
42/7 = 42 × 25/7 × 25 = 1050/175 - Subtract the two like fractions:
315/175 - 1050/175 = 315 - 1050/175 = -735/175 - After reducing the fraction, the answer is -21/5
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