Subtract 90/84 from 75/45
1st number: 1 30/45, 2nd number: 1 6/84
75/45 - 90/84 is 25/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 45 × 28 = 1260,
75/45 = 75 × 28/45 × 28 = 2100/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
90/84 = 90 × 15/84 × 15 = 1350/1260 - Subtract the two like fractions:
2100/1260 - 1350/1260 = 2100 - 1350/1260 = 750/1260 - After reducing the fraction, the answer is 25/42
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Related: 75/90-90/84