Subtract 42/10 from 80/4
1st number: 20 0/4, 2nd number: 4 2/10
80/4 - 42/10 is 79/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 10 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
80/4 = 80 × 5/4 × 5 = 400/20 - Likewise, for the 2nd fraction, since 10 × 2 = 20,
42/10 = 42 × 2/10 × 2 = 84/20 - Subtract the two like fractions:
400/20 - 84/20 = 400 - 84/20 = 316/20 - After reducing the fraction, the answer is 79/5
- In mixed form: 154/5
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