Add 45/90 and 72/7
1st number: 45/90, 2nd number: 10 2/7
45/90 + 72/7 is 151/14.
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,
45/90 = 45 × 7/90 × 7 = 315/630 - Likewise, for the 2nd fraction, since 7 × 90 = 630,
72/7 = 72 × 90/7 × 90 = 6480/630 - Add the two like fractions:
315/630 + 6480/630 = 315 + 6480/630 = 6795/630 - 6795/630 simplified gives 151/14
- So, 45/90 + 72/7 = 151/14
In mixed form: 1011/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 45/90+72/14 45/90+72/21 45/90+72/35 45/90+72/49