Subtract 81/7 from 63/30
1st number: 2 3/30, 2nd number: 11 4/7
63/30 - 81/7 is -663/70.
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,
63/30 = 63 × 7/30 × 7 = 441/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
81/7 = 81 × 30/7 × 30 = 2430/210 - Subtract the two like fractions:
441/210 - 2430/210 = 441 - 2430/210 = -1989/210 - After reducing the fraction, the answer is -663/70
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