Subtract 30/36 from 7/80
7/80 - 30/36 is -179/240.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 36 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
7/80 = 7 × 9/80 × 9 = 63/720 - Likewise, for the 2nd fraction, since 36 × 20 = 720,
30/36 = 30 × 20/36 × 20 = 600/720 - Subtract the two like fractions:
63/720 - 600/720 = 63 - 600/720 = -537/720 - After reducing the fraction, the answer is -179/240
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