Subtract 12/40 from 30/7
1st number: 4 2/7, 2nd number: 12/40
30/7 - 12/40 is 279/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 7 × 40 = 280,
30/7 = 30 × 40/7 × 40 = 1200/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
12/40 = 12 × 7/40 × 7 = 84/280 - Subtract the two like fractions:
1200/280 - 84/280 = 1200 - 84/280 = 1116/280 - After reducing the fraction, the answer is 279/70
- In mixed form: 369/70
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