Subtract 15/4 from 72/70
1st number: 1 2/70, 2nd number: 3 3/4
72/70 - 15/4 is -381/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 4 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
72/70 = 72 × 2/70 × 2 = 144/140 - Likewise, for the 2nd fraction, since 4 × 35 = 140,
15/4 = 15 × 35/4 × 35 = 525/140 - Subtract the two like fractions:
144/140 - 525/140 = 144 - 525/140 = -381/140
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