Subtract 72/80 from 21/6
1st number: 3 3/6, 2nd number: 72/80
21/6 - 72/80 is 13/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 6 × 40 = 240,
21/6 = 21 × 40/6 × 40 = 840/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
72/80 = 72 × 3/80 × 3 = 216/240 - Subtract the two like fractions:
840/240 - 216/240 = 840 - 216/240 = 624/240 - After reducing the fraction, the answer is 13/5
- In mixed form: 23/5
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