Add 21/24 and 12/90
21/24 + 12/90 is 121/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 24 × 15 = 360,
21/24 = 21 × 15/24 × 15 = 315/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
12/90 = 12 × 4/90 × 4 = 48/360 - Add the two like fractions:
315/360 + 48/360 = 315 + 48/360 = 363/360 - 363/360 simplified gives 121/120
- So, 21/24 + 12/90 = 121/120
In mixed form: 11/120
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