Subtract 40/28 from 70/80
1st number: 70/80, 2nd number: 1 12/28
70/80 - 40/28 is -31/56.
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,
40/28 = 40 × 20/28 × 20 = 800/560 - Subtract the two like fractions:
490/560 - 800/560 = 490 - 800/560 = -310/560 - After reducing the fraction, the answer is -31/56
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