Add 45/28 and 70/45
1st number: 1 17/28, 2nd number: 1 25/45
45/28 + 70/45 is 797/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
45/28 = 45 × 45/28 × 45 = 2025/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
70/45 = 70 × 28/45 × 28 = 1960/1260 - Add the two like fractions:
2025/1260 + 1960/1260 = 2025 + 1960/1260 = 3985/1260 - 3985/1260 simplified gives 797/252
- So, 45/28 + 70/45 = 797/252
In mixed form: 341/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/28+70/45 45/56+70/45 45/28+70/90 45/84+70/45