Add 21/90 and 8/12
21/90 + 8/12 is 9/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 90 × 2 = 180,
21/90 = 21 × 2/90 × 2 = 42/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
8/12 = 8 × 15/12 × 15 = 120/180 - Add the two like fractions:
42/180 + 120/180 = 42 + 120/180 = 162/180 - 162/180 simplified gives 9/10
- So, 21/90 + 8/12 = 9/10
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