Subtract 30/4 from 15/42
1st number: 15/42, 2nd number: 7 2/4
15/42 - 30/4 is -50/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
15/42 = 15 × 2/42 × 2 = 30/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
30/4 = 30 × 21/4 × 21 = 630/84 - Subtract the two like fractions:
30/84 - 630/84 = 30 - 630/84 = -600/84 - After reducing the fraction, the answer is -50/7
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