Subtract 35/28 from 70/80
1st number: 70/80, 2nd number: 1 7/28
70/80 - 35/28 is -3/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 28 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
70/80 = 70 × 7/80 × 7 = 490/560 - Likewise, for the 2nd fraction, since 28 × 20 = 560,
35/28 = 35 × 20/28 × 20 = 700/560 - Subtract the two like fractions:
490/560 - 700/560 = 490 - 700/560 = -210/560 - After reducing the fraction, the answer is -3/8
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