Subtract 72/21 from 16/30
1st number: 16/30, 2nd number: 3 9/21
16/30 - 72/21 is -304/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
16/30 = 16 × 7/30 × 7 = 112/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
72/21 = 72 × 10/21 × 10 = 720/210 - Subtract the two like fractions:
112/210 - 720/210 = 112 - 720/210 = -608/210 - After reducing the fraction, the answer is -304/105
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