Subtract 9/72 from 70/80
70/80 - 9/72 is 3/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 72 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
70/80 = 70 × 9/80 × 9 = 630/720 - Likewise, for the 2nd fraction, since 72 × 10 = 720,
9/72 = 9 × 10/72 × 10 = 90/720 - Subtract the two like fractions:
630/720 - 90/720 = 630 - 90/720 = 540/720 - After reducing the fraction, the answer is 3/4
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