Subtract 20/90 from 84/36
1st number: 2 12/36, 2nd number: 20/90
84/36 - 20/90 is 19/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 36 × 5 = 180,
84/36 = 84 × 5/36 × 5 = 420/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
20/90 = 20 × 2/90 × 2 = 40/180 - Subtract the two like fractions:
420/180 - 40/180 = 420 - 40/180 = 380/180 - After reducing the fraction, the answer is 19/9
- In mixed form: 21/9
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