Subtract 98/80 from 70/84
1st number: 70/84, 2nd number: 1 18/80
70/84 - 98/80 is -47/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 84 × 20 = 1680,
70/84 = 70 × 20/84 × 20 = 1400/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
98/80 = 98 × 21/80 × 21 = 2058/1680 - Subtract the two like fractions:
1400/1680 - 2058/1680 = 1400 - 2058/1680 = -658/1680 - After reducing the fraction, the answer is -47/120
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