Add 7/14 and 90/45
1st number: 7/14, 2nd number: 2 0/45
7/14 + 90/45 is 5/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 45 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 14 × 45 = 630,
7/14 = 7 × 45/14 × 45 = 315/630 - Likewise, for the 2nd fraction, since 45 × 14 = 630,
90/45 = 90 × 14/45 × 14 = 1260/630 - Add the two like fractions:
315/630 + 1260/630 = 315 + 1260/630 = 1575/630 - 1575/630 simplified gives 5/2
- So, 7/14 + 90/45 = 5/2
In mixed form: 21/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 7/28+90/45 21/14+90/45 7/42+90/45 35/14+90/45 7/70+90/45 49/14+90/45 7/98+90/45