Add 42/15 and 10/80
1st number: 2 12/15, 2nd number: 10/80
42/15 + 10/80 is 117/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
42/15 = 42 × 16/15 × 16 = 672/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
10/80 = 10 × 3/80 × 3 = 30/240 - Add the two like fractions:
672/240 + 30/240 = 672 + 30/240 = 702/240 - 702/240 simplified gives 117/40
- So, 42/15 + 10/80 = 117/40
In mixed form: 237/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15+10/80 42/15+20/80 42/30+10/80 42/15+30/80 42/45+10/80 42/15+50/80 42/75+10/80 42/15+70/80