Subtract 40/7 from 30/80
1st number: 30/80, 2nd number: 5 5/7
30/80 - 40/7 is -299/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 7 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
30/80 = 30 × 7/80 × 7 = 210/560 - Likewise, for the 2nd fraction, since 7 × 80 = 560,
40/7 = 40 × 80/7 × 80 = 3200/560 - Subtract the two like fractions:
210/560 - 3200/560 = 210 - 3200/560 = -2990/560 - After reducing the fraction, the answer is -299/56
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