Add 18/90 and 15/16
18/90 + 15/16 is 91/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 16 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
18/90 = 18 × 8/90 × 8 = 144/720 - Likewise, for the 2nd fraction, since 16 × 45 = 720,
15/16 = 15 × 45/16 × 45 = 675/720 - Add the two like fractions:
144/720 + 675/720 = 144 + 675/720 = 819/720 - 819/720 simplified gives 91/80
- So, 18/90 + 15/16 = 91/80
In mixed form: 111/80
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