Subtract 7/10 from 30/54
30/54 - 7/10 is -13/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 10 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 54 × 5 = 270,
30/54 = 30 × 5/54 × 5 = 150/270 - Likewise, for the 2nd fraction, since 10 × 27 = 270,
7/10 = 7 × 27/10 × 27 = 189/270 - Subtract the two like fractions:
150/270 - 189/270 = 150 - 189/270 = -39/270 - After reducing the fraction, the answer is -13/90
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