Add 7/10 and 20/45
7/10 + 20/45 is 103/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
7/10 = 7 × 9/10 × 9 = 63/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
20/45 = 20 × 2/45 × 2 = 40/90 - Add the two like fractions:
63/90 + 40/90 = 63 + 40/90 = 103/90 - So, 7/10 + 20/45 = 103/90
In mixed form: 113/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/10+20/45 7/10+40/45 7/20+20/45 7/10+20/90 21/10+20/45 7/10+60/45 7/30+20/45 35/10+20/45 7/50+20/45 49/10+20/45 7/70+20/45