Add 25/42 and 45/81
25/42 + 45/81 is 145/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 81 is 1134
Next, find the equivalent fraction of both fractional numbers with denominator 1134 - For the 1st fraction, since 42 × 27 = 1134,
25/42 = 25 × 27/42 × 27 = 675/1134 - Likewise, for the 2nd fraction, since 81 × 14 = 1134,
45/81 = 45 × 14/81 × 14 = 630/1134 - Add the two like fractions:
675/1134 + 630/1134 = 675 + 630/1134 = 1305/1134 - 1305/1134 simplified gives 145/126
- So, 25/42 + 45/81 = 145/126
In mixed form: 119/126
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