Add 25/8 and 21/90
1st number: 3 1/8, 2nd number: 21/90
25/8 + 21/90 is 403/120.
Steps for adding 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,
25/8 = 25 × 45/8 × 45 = 1125/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
21/90 = 21 × 4/90 × 4 = 84/360 - Add the two like fractions:
1125/360 + 84/360 = 1125 + 84/360 = 1209/360 - 1209/360 simplified gives 403/120
- So, 25/8 + 21/90 = 403/120
In mixed form: 343/120
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