Subtract 12/42 from 30/15
1st number: 2 0/15, 2nd number: 12/42
30/15 - 12/42 is 12/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 15 × 14 = 210,
30/15 = 30 × 14/15 × 14 = 420/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
12/42 = 12 × 5/42 × 5 = 60/210 - Subtract the two like fractions:
420/210 - 60/210 = 420 - 60/210 = 360/210 - After reducing the fraction, the answer is 12/7
- In mixed form: 15/7
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