Subtract 72/36 from 30/70
1st number: 30/70, 2nd number: 2 0/36
30/70 - 72/36 is -11/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 36 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 70 × 18 = 1260,
30/70 = 30 × 18/70 × 18 = 540/1260 - Likewise, for the 2nd fraction, since 36 × 35 = 1260,
72/36 = 72 × 35/36 × 35 = 2520/1260 - Subtract the two like fractions:
540/1260 - 2520/1260 = 540 - 2520/1260 = -1980/1260 - After reducing the fraction, the answer is -11/7
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