Subtract 21/90 from 28/8
1st number: 3 4/8, 2nd number: 21/90
28/8 - 21/90 is 49/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
28/8 = 28 × 45/8 × 45 = 1260/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
21/90 = 21 × 4/90 × 4 = 84/360 - Subtract the two like fractions:
1260/360 - 84/360 = 1260 - 84/360 = 1176/360 - After reducing the fraction, the answer is 49/15
- In mixed form: 34/15
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