Subtract 72/5 from 30/70
1st number: 30/70, 2nd number: 14 2/5
30/70 - 72/5 is -489/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 5 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 70 × 1 = 70,
30/70 = 30 × 1/70 × 1 = 30/70 - Likewise, for the 2nd fraction, since 5 × 14 = 70,
72/5 = 72 × 14/5 × 14 = 1008/70 - Subtract the two like fractions:
30/70 - 1008/70 = 30 - 1008/70 = -978/70 - After reducing the fraction, the answer is -489/35
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