Subtract 42/10 from 54/15
1st number: 3 9/15, 2nd number: 4 2/10
54/15 - 42/10 is -3/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
54/15 = 54 × 2/15 × 2 = 108/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
42/10 = 42 × 3/10 × 3 = 126/30 - Subtract the two like fractions:
108/30 - 126/30 = 108 - 126/30 = -18/30 - After reducing the fraction, the answer is -3/5
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