Add 42/15 and 30/16
1st number: 2 12/15, 2nd number: 1 14/16
42/15 + 30/16 is 187/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 16 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 16 × 15 = 240,
30/16 = 30 × 15/16 × 15 = 450/240 - Add the two like fractions:
672/240 + 450/240 = 672 + 450/240 = 1122/240 - 1122/240 simplified gives 187/40
- So, 42/15 + 30/16 = 187/40
In mixed form: 427/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15+30/16 42/15+60/16 42/30+30/16 42/15+30/32 42/15+90/16 42/45+30/16 42/15+30/48 42/75+30/16 42/15+30/80