Add 1/45 and 72/70
1st number: 1/45, 2nd number: 1 2/70
1/45 + 72/70 is 331/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 45 × 14 = 630,
1/45 = 1 × 14/45 × 14 = 14/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
72/70 = 72 × 9/70 × 9 = 648/630 - Add the two like fractions:
14/630 + 648/630 = 14 + 648/630 = 662/630 - 662/630 simplified gives 331/315
- So, 1/45 + 72/70 = 331/315
In mixed form: 116/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/45+72/70 1/90+72/70 3/45+72/70 5/45+72/70 7/45+72/70