Add 42/80 and 20/30
42/80 + 20/30 is 143/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 30 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 80 × 3 = 240,
42/80 = 42 × 3/80 × 3 = 126/240 - Likewise, for the 2nd fraction, since 30 × 8 = 240,
20/30 = 20 × 8/30 × 8 = 160/240 - Add the two like fractions:
126/240 + 160/240 = 126 + 160/240 = 286/240 - 286/240 simplified gives 143/120
- So, 42/80 + 20/30 = 143/120
In mixed form: 123/120
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