Add 75/90 and 18/7
1st number: 75/90, 2nd number: 2 4/7
75/90 + 18/7 is 143/42.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 7 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 90 × 7 = 630,
75/90 = 75 × 7/90 × 7 = 525/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
18/7 = 18 × 90/7 × 90 = 1620/630 - Add the two like fractions:
525/630 + 1620/630 = 525 + 1620/630 = 2145/630 - 2145/630 simplified gives 143/42
- So, 75/90 + 18/7 = 143/42
In mixed form: 317/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/90+36/7 75/90+18/14 75/90+54/7 75/90+18/21 75/90+90/7 75/90+18/35 75/90+18/49