Subtract 15/70 from 40/80
40/80 - 15/70 is 2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
40/80 = 40 × 7/80 × 7 = 280/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
15/70 = 15 × 8/70 × 8 = 120/560 - Subtract the two like fractions:
280/560 - 120/560 = 280 - 120/560 = 160/560 - After reducing the fraction, the answer is 2/7
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