Subtract 10/80 from 7/18
7/18 - 10/80 is 19/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
7/18 = 7 × 40/18 × 40 = 280/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
10/80 = 10 × 9/80 × 9 = 90/720 - Subtract the two like fractions:
280/720 - 90/720 = 280 - 90/720 = 190/720 - After reducing the fraction, the answer is 19/72
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