Subtract 25/30 from 2/7
2/7 - 25/30 is -23/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 7 × 30 = 210,
2/7 = 2 × 30/7 × 30 = 60/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
25/30 = 25 × 7/30 × 7 = 175/210 - Subtract the two like fractions:
60/210 - 175/210 = 60 - 175/210 = -115/210 - After reducing the fraction, the answer is -23/42
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