Subtract 25/45 from 42/12
1st number: 3 6/12, 2nd number: 25/45
42/12 - 25/45 is 53/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
42/12 = 42 × 15/12 × 15 = 630/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
25/45 = 25 × 4/45 × 4 = 100/180 - Subtract the two like fractions:
630/180 - 100/180 = 630 - 100/180 = 530/180 - After reducing the fraction, the answer is 53/18
- In mixed form: 217/18
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