Subtract 21/42 from 80/30
1st number: 2 20/30, 2nd number: 21/42
80/30 - 21/42 is 13/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
80/30 = 80 × 7/30 × 7 = 560/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
21/42 = 21 × 5/42 × 5 = 105/210 - Subtract the two like fractions:
560/210 - 105/210 = 560 - 105/210 = 455/210 - After reducing the fraction, the answer is 13/6
- In mixed form: 21/6
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