Add 45/70 and 10/90
45/70 + 10/90 is 95/126.
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,
45/70 = 45 × 9/70 × 9 = 405/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
10/90 = 10 × 7/90 × 7 = 70/630 - Add the two like fractions:
405/630 + 70/630 = 405 + 70/630 = 475/630 - 475/630 simplified gives 95/126
- So, 45/70 + 10/90 = 95/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+10/90 45/70+20/90 45/70+30/90 45/70+50/90 45/70+70/90