Subtract 72/7 from 40/30
1st number: 1 10/30, 2nd number: 10 2/7
40/30 - 72/7 is -188/21.
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,
40/30 = 40 × 7/30 × 7 = 280/210 - Likewise, for the 2nd fraction, since 7 × 30 = 210,
72/7 = 72 × 30/7 × 30 = 2160/210 - Subtract the two like fractions:
280/210 - 2160/210 = 280 - 2160/210 = -1880/210 - After reducing the fraction, the answer is -188/21
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