Add 5/45 and 28/42
5/45 + 28/42 is 7/9.
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,
5/45 = 5 × 14/45 × 14 = 70/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
28/42 = 28 × 15/42 × 15 = 420/630 - Add the two like fractions:
70/630 + 420/630 = 70 + 420/630 = 490/630 - 490/630 simplified gives 7/9
- So, 5/45 + 28/42 = 7/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/45+28/42 5/45+56/42 5/90+28/42 5/45+28/84 15/45+28/42 5/45+84/42 25/45+28/42 35/45+28/42