Subtract 72/30 from 50/21
1st number: 2 8/21, 2nd number: 2 12/30
50/21 - 72/30 is -2/105.
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,
50/21 = 50 × 10/21 × 10 = 500/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
72/30 = 72 × 7/30 × 7 = 504/210 - Subtract the two like fractions:
500/210 - 504/210 = 500 - 504/210 = -4/210 - After reducing the fraction, the answer is -2/105
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