Add 10/90 and 15/70
10/90 + 15/70 is 41/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
10/90 = 10 × 7/90 × 7 = 70/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
15/70 = 15 × 9/70 × 9 = 135/630 - Add the two like fractions:
70/630 + 135/630 = 70 + 135/630 = 205/630 - 205/630 simplified gives 41/126
- So, 10/90 + 15/70 = 41/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/90+15/70 10/90+30/70 30/90+15/70 10/90+45/70 50/90+15/70 10/90+75/70 70/90+15/70