Add 18/80 and 3/90
18/80 + 3/90 is 31/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
18/80 = 18 × 9/80 × 9 = 162/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
3/90 = 3 × 8/90 × 8 = 24/720 - Add the two like fractions:
162/720 + 24/720 = 162 + 24/720 = 186/720 - 186/720 simplified gives 31/120
- So, 18/80 + 3/90 = 31/120
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