Subtract 7/80 from 40/21
1st number: 1 19/21, 2nd number: 7/80
40/21 - 7/80 is 3053/1680.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
40/21 = 40 × 80/21 × 80 = 3200/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
7/80 = 7 × 21/80 × 21 = 147/1680 - Subtract the two like fractions:
3200/1680 - 147/1680 = 3200 - 147/1680 = 3053/1680 - In mixed form: 11373/1680
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