Add 63/70 and 5/90
63/70 + 5/90 is 43/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
63/70 = 63 × 9/70 × 9 = 567/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
5/90 = 5 × 7/90 × 7 = 35/630 - Add the two like fractions:
567/630 + 35/630 = 567 + 35/630 = 602/630 - 602/630 simplified gives 43/45
- So, 63/70 + 5/90 = 43/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/70+10/90 63/70+15/90 63/70+25/90 63/70+35/90