Add 45/18 and 42/80
1st number: 2 9/18, 2nd number: 42/80
45/18 + 42/80 is 121/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 18 × 40 = 720,
45/18 = 45 × 40/18 × 40 = 1800/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
42/80 = 42 × 9/80 × 9 = 378/720 - Add the two like fractions:
1800/720 + 378/720 = 1800 + 378/720 = 2178/720 - 2178/720 simplified gives 121/40
- So, 45/18 + 42/80 = 121/40
In mixed form: 31/40
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