Subtract 35/18 from 42/30
1st number: 1 12/30, 2nd number: 1 17/18
42/30 - 35/18 is -49/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
42/30 = 42 × 3/30 × 3 = 126/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
35/18 = 35 × 5/18 × 5 = 175/90 - Subtract the two like fractions:
126/90 - 175/90 = 126 - 175/90 = -49/90
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