Add 1/45 and 18/42
1/45 + 18/42 is 142/315.
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,
1/45 = 1 × 14/45 × 14 = 14/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
18/42 = 18 × 15/42 × 15 = 270/630 - Add the two like fractions:
14/630 + 270/630 = 14 + 270/630 = 284/630 - 284/630 simplified gives 142/315
- So, 1/45 + 18/42 = 142/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/45+18/42 1/45+36/42 1/90+18/42 1/45+18/84 3/45+18/42 1/45+54/42 5/45+18/42 1/45+90/42 7/45+18/42