Add 4/45 and 9/42
4/45 + 9/42 is 191/630.
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,
4/45 = 4 × 14/45 × 14 = 56/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
9/42 = 9 × 15/42 × 15 = 135/630 - Add the two like fractions:
56/630 + 135/630 = 56 + 135/630 = 191/630 - So, 4/45 + 9/42 = 191/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/45+9/42 4/45+18/42 4/90+9/42 4/45+9/84 12/45+9/42 4/45+27/42 20/45+9/42 4/45+45/42 28/45+9/42 4/45+63/42