Subtract 21/7 from 8/30
1st number: 8/30, 2nd number: 3 0/7
8/30 - 21/7 is -41/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 7 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
8/30 = 8 × 7/30 × 7 = 56/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
21/7 = 21 × 30/7 × 30 = 630/210 - Subtract the two like fractions:
56/210 - 630/210 = 56 - 630/210 = -574/210 - After reducing the fraction, the answer is -41/15
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