Add 42/81 and 25/42
42/81 + 25/42 is 421/378.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 42 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 81 × 14 = 1134,
42/81 = 42 × 14/81 × 14 = 588/1134 - Likewise, for the 2nd fraction, since 42 × 27 = 1134,
25/42 = 25 × 27/42 × 27 = 675/1134 - Add the two like fractions:
588/1134 + 675/1134 = 588 + 675/1134 = 1263/1134 - 1263/1134 simplified gives 421/378
- So, 42/81 + 25/42 = 421/378
In mixed form: 143/378
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