Subtract 42/72 from 40/12
1st number: 3 4/12, 2nd number: 42/72
40/12 - 42/72 is 11/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 12 × 6 = 72,
40/12 = 40 × 6/12 × 6 = 240/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
42/72 = 42 × 1/72 × 1 = 42/72 - Subtract the two like fractions:
240/72 - 42/72 = 240 - 42/72 = 198/72 - After reducing the fraction, the answer is 11/4
- In mixed form: 23/4
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