Subtract 84/36 from 7/30
1st number: 7/30, 2nd number: 2 12/36
7/30 - 84/36 is -21/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 36 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 30 × 6 = 180,
7/30 = 7 × 6/30 × 6 = 42/180 - Likewise, for the 2nd fraction, since 36 × 5 = 180,
84/36 = 84 × 5/36 × 5 = 420/180 - Subtract the two like fractions:
42/180 - 420/180 = 42 - 420/180 = -378/180 - After reducing the fraction, the answer is -21/10
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