Subtract 40/30 from 16/42
1st number: 16/42, 2nd number: 1 10/30
16/42 - 40/30 is -20/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
16/42 = 16 × 5/42 × 5 = 80/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
40/30 = 40 × 7/30 × 7 = 280/210 - Subtract the two like fractions:
80/210 - 280/210 = 80 - 280/210 = -200/210 - After reducing the fraction, the answer is -20/21
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