Add 10/18 and 42/80
10/18 + 42/80 is 389/360.
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,
10/18 = 10 × 40/18 × 40 = 400/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
42/80 = 42 × 9/80 × 9 = 378/720 - Add the two like fractions:
400/720 + 378/720 = 400 + 378/720 = 778/720 - 778/720 simplified gives 389/360
- So, 10/18 + 42/80 = 389/360
In mixed form: 129/360
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