Add 45/42 and 10/90
1st number: 1 3/42, 2nd number: 10/90
45/42 + 10/90 is 149/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 42 × 15 = 630,
45/42 = 45 × 15/42 × 15 = 675/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
10/90 = 10 × 7/90 × 7 = 70/630 - Add the two like fractions:
675/630 + 70/630 = 675 + 70/630 = 745/630 - 745/630 simplified gives 149/126
- So, 45/42 + 10/90 = 149/126
In mixed form: 123/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42+10/90 45/42+20/90 45/84+10/90 45/42+30/90 45/42+50/90 45/42+70/90