Add 12/70 and 42/45
12/70 + 42/45 is 116/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
12/70 = 12 × 9/70 × 9 = 108/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
42/45 = 42 × 14/45 × 14 = 588/630 - Add the two like fractions:
108/630 + 588/630 = 108 + 588/630 = 696/630 - 696/630 simplified gives 116/105
- So, 12/70 + 42/45 = 116/105
In mixed form: 111/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/70+42/45 12/70+84/45 12/70+42/90 36/70+42/45 60/70+42/45 84/70+42/45