Add 80/30 and 12/63
1st number: 2 20/30, 2nd number: 12/63
80/30 + 12/63 is 20/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
80/30 = 80 × 21/30 × 21 = 1680/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
12/63 = 12 × 10/63 × 10 = 120/630 - Add the two like fractions:
1680/630 + 120/630 = 1680 + 120/630 = 1800/630 - 1800/630 simplified gives 20/7
- So, 80/30 + 12/63 = 20/7
In mixed form: 26/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30+24/63 80/60+12/63 80/30+36/63 80/90+12/63 80/30+60/63 80/30+84/63