Add 80/30 and 70/8
1st number: 2 20/30, 2nd number: 8 6/8
80/30 + 70/8 is 137/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
80/30 = 80 × 4/30 × 4 = 320/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
70/8 = 70 × 15/8 × 15 = 1050/120 - Add the two like fractions:
320/120 + 1050/120 = 320 + 1050/120 = 1370/120 - 1370/120 simplified gives 137/12
- So, 80/30 + 70/8 = 137/12
In mixed form: 115/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/60+70/8 80/30+70/16 80/90+70/8 80/30+70/24 80/30+70/40 80/30+70/56