Add 64/45 and 40/70
1st number: 1 19/45, 2nd number: 40/70
64/45 + 40/70 is 628/315.
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,
64/45 = 64 × 14/45 × 14 = 896/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
40/70 = 40 × 9/70 × 9 = 360/630 - Add the two like fractions:
896/630 + 360/630 = 896 + 360/630 = 1256/630 - 1256/630 simplified gives 628/315
- So, 64/45 + 40/70 = 628/315
In mixed form: 1313/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/45+80/70 64/90+40/70