Subtract 42/30 from 16/21
1st number: 16/21, 2nd number: 1 12/30
16/21 - 42/30 is -67/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
16/21 = 16 × 10/21 × 10 = 160/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
42/30 = 42 × 7/30 × 7 = 294/210 - Subtract the two like fractions:
160/210 - 294/210 = 160 - 294/210 = -134/210 - After reducing the fraction, the answer is -67/105
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