Subtract 75/20 from 30/35
1st number: 30/35, 2nd number: 3 15/20
30/35 - 75/20 is -81/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 35 × 4 = 140,
30/35 = 30 × 4/35 × 4 = 120/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
75/20 = 75 × 7/20 × 7 = 525/140 - Subtract the two like fractions:
120/140 - 525/140 = 120 - 525/140 = -405/140 - After reducing the fraction, the answer is -81/28
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