Subtract 21/80 from 70/50
1st number: 1 20/50, 2nd number: 21/80
70/50 - 21/80 is 91/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 80 is 400
Next, find the equivalent fraction of both fractional numbers with denominator 400 - For the 1st fraction, since 50 × 8 = 400,
70/50 = 70 × 8/50 × 8 = 560/400 - Likewise, for the 2nd fraction, since 80 × 5 = 400,
21/80 = 21 × 5/80 × 5 = 105/400 - Subtract the two like fractions:
560/400 - 105/400 = 560 - 105/400 = 455/400 - After reducing the fraction, the answer is 91/80
- In mixed form: 111/80
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