Add 27/45 and 8/42
27/45 + 8/42 is 83/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
27/45 = 27 × 14/45 × 14 = 378/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
8/42 = 8 × 15/42 × 15 = 120/630 - Add the two like fractions:
378/630 + 120/630 = 378 + 120/630 = 498/630 - 498/630 simplified gives 83/105
- So, 27/45 + 8/42 = 83/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/45+8/42 27/45+16/42 27/90+8/42 27/45+8/84 81/45+8/42 27/45+24/42 27/45+40/42 27/45+56/42