Add 42/80 and 45/75
42/80 + 45/75 is 9/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 75 is 1200
Next, find the equivalent fraction of both fractional numbers with denominator 1200 - For the 1st fraction, since 80 × 15 = 1200,
42/80 = 42 × 15/80 × 15 = 630/1200 - Likewise, for the 2nd fraction, since 75 × 16 = 1200,
45/75 = 45 × 16/75 × 16 = 720/1200 - Add the two like fractions:
630/1200 + 720/1200 = 630 + 720/1200 = 1350/1200 - 1350/1200 simplified gives 9/8
- So, 42/80 + 45/75 = 9/8
In mixed form: 11/8
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