Subtract 18/70 from 72/80
72/80 - 18/70 is 9/14.
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,
72/80 = 72 × 7/80 × 7 = 504/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
18/70 = 18 × 8/70 × 8 = 144/560 - Subtract the two like fractions:
504/560 - 144/560 = 504 - 144/560 = 360/560 - After reducing the fraction, the answer is 9/14
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