Subtract 40/42 from 80/12
1st number: 6 8/12, 2nd number: 40/42
80/12 - 40/42 is 40/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 42 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
80/12 = 80 × 7/12 × 7 = 560/84 - Likewise, for the 2nd fraction, since 42 × 2 = 84,
40/42 = 40 × 2/42 × 2 = 80/84 - Subtract the two like fractions:
560/84 - 80/84 = 560 - 80/84 = 480/84 - After reducing the fraction, the answer is 40/7
- In mixed form: 55/7
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