Add 80/70 and 42/48
1st number: 1 10/70, 2nd number: 42/48
80/70 + 42/48 is 113/56.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 48 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 70 × 24 = 1680,
80/70 = 80 × 24/70 × 24 = 1920/1680 - Likewise, for the 2nd fraction, since 48 × 35 = 1680,
42/48 = 42 × 35/48 × 35 = 1470/1680 - Add the two like fractions:
1920/1680 + 1470/1680 = 1920 + 1470/1680 = 3390/1680 - 3390/1680 simplified gives 113/56
- So, 80/70 + 42/48 = 113/56
In mixed form: 21/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70+84/48 80/70+42/96