Add 70/45 and 80/18
1st number: 1 25/45, 2nd number: 4 8/18
70/45 + 80/18 is 6/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
70/45 = 70 × 2/45 × 2 = 140/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
80/18 = 80 × 5/18 × 5 = 400/90 - Add the two like fractions:
140/90 + 400/90 = 140 + 400/90 = 540/90 - 540/90 simplified gives 6/1
- So, 70/45 + 80/18 = 6/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90+80/18 70/45+80/36 70/45+80/54 70/45+80/90