Add 8/45 and 63/42
1st number: 8/45, 2nd number: 1 21/42
8/45 + 63/42 is 151/90.
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,
8/45 = 8 × 14/45 × 14 = 112/630 - Likewise, for the 2nd fraction, since 42 × 15 = 630,
63/42 = 63 × 15/42 × 15 = 945/630 - Add the two like fractions:
112/630 + 945/630 = 112 + 945/630 = 1057/630 - 1057/630 simplified gives 151/90
- So, 8/45 + 63/42 = 151/90
In mixed form: 161/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/45+63/42 8/90+63/42 8/45+63/84 24/45+63/42 40/45+63/42 56/45+63/42