Add 81/90 and 14/42
81/90 + 14/42 is 37/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
81/90 = 81 × 7/90 × 7 = 567/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
14/42 = 14 × 15/42 × 15 = 210/630 - Add the two like fractions:
567/630 + 210/630 = 567 + 210/630 = 777/630 - 777/630 simplified gives 37/30
- So, 81/90 + 14/42 = 37/30
In mixed form: 17/30
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