Add 45/90 and 80/63
1st number: 45/90, 2nd number: 1 17/63
45/90 + 80/63 is 223/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
45/90 = 45 × 7/90 × 7 = 315/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
80/63 = 80 × 10/63 × 10 = 800/630 - Add the two like fractions:
315/630 + 800/630 = 315 + 800/630 = 1115/630 - 1115/630 simplified gives 223/126
- So, 45/90 + 80/63 = 223/126
In mixed form: 197/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: