Add 12/16 and 42/70
12/16 + 42/70 is 27/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 70 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 16 × 35 = 560,
12/16 = 12 × 35/16 × 35 = 420/560 - Likewise, for the 2nd fraction, since 70 × 8 = 560,
42/70 = 42 × 8/70 × 8 = 336/560 - Add the two like fractions:
420/560 + 336/560 = 420 + 336/560 = 756/560 - 756/560 simplified gives 27/20
- So, 12/16 + 42/70 = 27/20
In mixed form: 17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/16+42/70 12/16+84/70 12/32+42/70 36/16+42/70 12/48+42/70 60/16+42/70 12/80+42/70 84/16+42/70