Add 27/42 and 18/45
27/42 + 18/45 is 73/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 45 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 45 × 14 = 630,
18/45 = 18 × 14/45 × 14 = 252/630 - Add the two like fractions:
405/630 + 252/630 = 405 + 252/630 = 657/630 - 657/630 simplified gives 73/70
- So, 27/42 + 18/45 = 73/70
In mixed form: 13/70
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