Subtract 30/10 from 50/21
1st number: 2 8/21, 2nd number: 3 0/10
50/21 - 30/10 is -13/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 10 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 10 × 21 = 210,
30/10 = 30 × 21/10 × 21 = 630/210 - Subtract the two like fractions:
500/210 - 630/210 = 500 - 630/210 = -130/210 - After reducing the fraction, the answer is -13/21
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