Subtract 7/80 from 1/40
140 - 780 is -116.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
140 = 1 × 240 × 2 = 280 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
780 = 7 × 180 × 1 = 780 - Subtract the two like fractions:
280 - 780 = 2 - 780 = -580 - After reducing the fraction, the answer is -116
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