Subtract 30/21 from 6/40
1st number: 6/40, 2nd number: 1 9/21
6/40 - 30/21 is -179/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 21 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
6/40 = 6 × 21/40 × 21 = 126/840 - Likewise, for the 2nd fraction, since 21 × 40 = 840,
30/21 = 30 × 40/21 × 40 = 1200/840 - Subtract the two like fractions:
126/840 - 1200/840 = 126 - 1200/840 = -1074/840 - After reducing the fraction, the answer is -179/140
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