Add 27/42 and 81/90
27/42 + 81/90 is 54/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
27/42 = 27 × 15/42 × 15 = 405/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
81/90 = 81 × 7/90 × 7 = 567/630 - Add the two like fractions:
405/630 + 567/630 = 405 + 567/630 = 972/630 - 972/630 simplified gives 54/35
- So, 27/42 + 81/90 = 54/35
In mixed form: 119/35
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