Subtract 80/45 from 4/21
1st number: 4/21, 2nd number: 1 35/45
4/21 - 80/45 is -100/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 21 × 15 = 315,
4/21 = 4 × 15/21 × 15 = 60/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
80/45 = 80 × 7/45 × 7 = 560/315 - Subtract the two like fractions:
60/315 - 560/315 = 60 - 560/315 = -500/315 - After reducing the fraction, the answer is -100/63
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