Add 28/32 and 21/90
28/32 + 21/90 is 133/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 90 is 1440
Next, find the equivalent fraction of both fractional numbers with denominator 1440 - For the 1st fraction, since 32 × 45 = 1440,
28/32 = 28 × 45/32 × 45 = 1260/1440 - Likewise, for the 2nd fraction, since 90 × 16 = 1440,
21/90 = 21 × 16/90 × 16 = 336/1440 - Add the two like fractions:
1260/1440 + 336/1440 = 1260 + 336/1440 = 1596/1440 - 1596/1440 simplified gives 133/120
- So, 28/32 + 21/90 = 133/120
In mixed form: 113/120
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