Add 42/6 and 70/80
1st number: 7 0/6, 2nd number: 70/80
42/6 + 70/80 is 63/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 6 × 40 = 240,
42/6 = 42 × 40/6 × 40 = 1680/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
70/80 = 70 × 3/80 × 3 = 210/240 - Add the two like fractions:
1680/240 + 210/240 = 1680 + 210/240 = 1890/240 - 1890/240 simplified gives 63/8
- So, 42/6 + 70/80 = 63/8
In mixed form: 77/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/6+70/80 42/12+70/80 42/18+70/80 42/30+70/80