Subtract 84/90 from 45/84
45/84 - 84/90 is -167/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
45/84 = 45 × 15/84 × 15 = 675/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
84/90 = 84 × 14/90 × 14 = 1176/1260 - Subtract the two like fractions:
675/1260 - 1176/1260 = 675 - 1176/1260 = -501/1260 - After reducing the fraction, the answer is -167/420
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Related: 90/84-84/90