Add 42/80 and 18/40
42/80 + 18/40 is 39/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 40 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 80 × 1 = 80,
42/80 = 42 × 1/80 × 1 = 42/80 - Likewise, for the 2nd fraction, since 40 × 2 = 80,
18/40 = 18 × 2/40 × 2 = 36/80 - Add the two like fractions:
42/80 + 36/80 = 42 + 36/80 = 78/80 - 78/80 simplified gives 39/40
- So, 42/80 + 18/40 = 39/40
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