Add 42/80 and 25/45
42/80 + 25/45 is 389/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 45 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
42/80 = 42 × 9/80 × 9 = 378/720 - Likewise, for the 2nd fraction, since 45 × 16 = 720,
25/45 = 25 × 16/45 × 16 = 400/720 - Add the two like fractions:
378/720 + 400/720 = 378 + 400/720 = 778/720 - 778/720 simplified gives 389/360
- So, 42/80 + 25/45 = 389/360
In mixed form: 129/360
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