Add 18/10 and 90/70
1st number: 1 8/10, 2nd number: 1 20/70
18/10 + 90/70 is 108/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 70 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
18/10 = 18 × 7/10 × 7 = 126/70 - Likewise, for the 2nd fraction, since 70 × 1 = 70,
90/70 = 90 × 1/70 × 1 = 90/70 - Add the two like fractions:
126/70 + 90/70 = 126 + 90/70 = 216/70 - 216/70 simplified gives 108/35
- So, 18/10 + 90/70 = 108/35
In mixed form: 33/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/10+90/70 18/20+90/70 54/10+90/70 18/30+90/70 90/10+90/70 18/50+90/70 18/70+90/70