Subtract 75/45 from 5/7
1st number: 5/7, 2nd number: 1 30/45
5/7 - 75/45 is -20/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 7 × 45 = 315,
5/7 = 5 × 45/7 × 45 = 225/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
75/45 = 75 × 7/45 × 7 = 525/315 - Subtract the two like fractions:
225/315 - 525/315 = 225 - 525/315 = -300/315 - After reducing the fraction, the answer is -20/21
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