Subtract 21/80 from 42/28
1st number: 1 14/28, 2nd number: 21/80
42/28 - 21/80 is 99/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
42/28 = 42 × 20/28 × 20 = 840/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
21/80 = 21 × 7/80 × 7 = 147/560 - Subtract the two like fractions:
840/560 - 147/560 = 840 - 147/560 = 693/560 - After reducing the fraction, the answer is 99/80
- In mixed form: 119/80
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