Subtract 84/80 from 45/70
1st number: 45/70, 2nd number: 1 4/80
45/70 - 84/80 is -57/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 70 × 8 = 560,
45/70 = 45 × 8/70 × 8 = 360/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
84/80 = 84 × 7/80 × 7 = 588/560 - Subtract the two like fractions:
360/560 - 588/560 = 360 - 588/560 = -228/560 - After reducing the fraction, the answer is -57/140
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Related: 90/70-84/80