Add 9/7 and 75/90
1st number: 1 2/7, 2nd number: 75/90
9/7 + 75/90 is 89/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 7 × 90 = 630,
9/7 = 9 × 90/7 × 90 = 810/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
75/90 = 75 × 7/90 × 7 = 525/630 - Add the two like fractions:
810/630 + 525/630 = 810 + 525/630 = 1335/630 - 1335/630 simplified gives 89/42
- So, 9/7 + 75/90 = 89/42
In mixed form: 25/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/7+75/90 9/14+75/90 27/7+75/90 9/21+75/90 45/7+75/90 9/35+75/90 63/7+75/90 9/49+75/90