Add 42/56 and 70/45
1st number: 42/56, 2nd number: 1 25/45
42/56 + 70/45 is 83/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 45 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 56 × 45 = 2520,
42/56 = 42 × 45/56 × 45 = 1890/2520 - Likewise, for the 2nd fraction, since 45 × 56 = 2520,
70/45 = 70 × 56/45 × 56 = 3920/2520 - Add the two like fractions:
1890/2520 + 3920/2520 = 1890 + 3920/2520 = 5810/2520 - 5810/2520 simplified gives 83/36
- So, 42/56 + 70/45 = 83/36
In mixed form: 211/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+70/45 42/56+70/90