Subtract 70/72 from 30/75
30/75 - 70/72 is -103/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 75 × 24 = 1800,
30/75 = 30 × 24/75 × 24 = 720/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
70/72 = 70 × 25/72 × 25 = 1750/1800 - Subtract the two like fractions:
720/1800 - 1750/1800 = 720 - 1750/1800 = -1030/1800 - After reducing the fraction, the answer is -103/180
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