Add 42/80 and 35/72
42/80 + 35/72 is 91/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 72 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 72 × 10 = 720,
35/72 = 35 × 10/72 × 10 = 350/720 - Add the two like fractions:
378/720 + 350/720 = 378 + 350/720 = 728/720 - 728/720 simplified gives 91/90
- So, 42/80 + 35/72 = 91/90
In mixed form: 11/90
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