Subtract 45/12 from 50/70
1st number: 50/70, 2nd number: 3 9/12
50/70 - 45/12 is -85/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 12 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 70 × 6 = 420,
50/70 = 50 × 6/70 × 6 = 300/420 - Likewise, for the 2nd fraction, since 12 × 35 = 420,
45/12 = 45 × 35/12 × 35 = 1575/420 - Subtract the two like fractions:
300/420 - 1575/420 = 300 - 1575/420 = -1275/420 - After reducing the fraction, the answer is -85/28
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