Add 18/10 and 90/20
1st number: 1 8/10, 2nd number: 4 10/20
18/10 + 90/20 is 63/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 10 × 2 = 20,
18/10 = 18 × 2/10 × 2 = 36/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
90/20 = 90 × 1/20 × 1 = 90/20 - Add the two like fractions:
36/20 + 90/20 = 36 + 90/20 = 126/20 - 126/20 simplified gives 63/10
- So, 18/10 + 90/20 = 63/10
In mixed form: 63/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/10+90/20 18/20+90/20 18/10+90/40 54/10+90/20 18/30+90/20 18/10+90/60 90/10+90/20 18/50+90/20 18/70+90/20