Subtract 42/36 from 7/45
1st number: 7/45, 2nd number: 1 6/36
7/45 - 42/36 is -91/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
7/45 = 7 × 4/45 × 4 = 28/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
42/36 = 42 × 5/36 × 5 = 210/180 - Subtract the two like fractions:
28/180 - 210/180 = 28 - 210/180 = -182/180 - After reducing the fraction, the answer is -91/90
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