Add 42/30 and 5/80
1st number: 1 12/30, 2nd number: 5/80
42/30 + 5/80 is 117/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
42/30 = 42 × 8/30 × 8 = 336/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
5/80 = 5 × 3/80 × 3 = 15/240 - Add the two like fractions:
336/240 + 15/240 = 336 + 15/240 = 351/240 - 351/240 simplified gives 117/80
- So, 42/30 + 5/80 = 117/80
In mixed form: 137/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/30+5/80 42/30+10/80 42/60+5/80 42/30+15/80 42/90+5/80 42/30+25/80 42/30+35/80