Subtract 90/30 from 21/36
1st number: 21/36, 2nd number: 3 0/30
21/36 - 90/30 is -29/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 30 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
21/36 = 21 × 5/36 × 5 = 105/180 - Likewise, for the 2nd fraction, since 30 × 6 = 180,
90/30 = 90 × 6/30 × 6 = 540/180 - Subtract the two like fractions:
105/180 - 540/180 = 105 - 540/180 = -435/180 - After reducing the fraction, the answer is -29/12
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