Add 18/8 and 40/70
1st number: 2 2/8, 2nd number: 40/70
18/8 + 40/70 is 79/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 8 × 35 = 280,
18/8 = 18 × 35/8 × 35 = 630/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
40/70 = 40 × 4/70 × 4 = 160/280 - Add the two like fractions:
630/280 + 160/280 = 630 + 160/280 = 790/280 - 790/280 simplified gives 79/28
- So, 18/8 + 40/70 = 79/28
In mixed form: 223/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/8+40/70 18/8+80/70 18/16+40/70 54/8+40/70 18/24+40/70 90/8+40/70 18/40+40/70 18/56+40/70