Add 42/45 and 63/80
42/45 + 63/80 is 413/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
42/45 = 42 × 16/45 × 16 = 672/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
63/80 = 63 × 9/80 × 9 = 567/720 - Add the two like fractions:
672/720 + 567/720 = 672 + 567/720 = 1239/720 - 1239/720 simplified gives 413/240
- So, 42/45 + 63/80 = 413/240
In mixed form: 1173/240
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