Add 40/70 and 18/8
1st number: 40/70, 2nd number: 2 2/8
40/70 + 18/8 is 79/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 8 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 70 × 4 = 280,
40/70 = 40 × 4/70 × 4 = 160/280 - Likewise, for the 2nd fraction, since 8 × 35 = 280,
18/8 = 18 × 35/8 × 35 = 630/280 - Add the two like fractions:
160/280 + 630/280 = 160 + 630/280 = 790/280 - 790/280 simplified gives 79/28
- So, 40/70 + 18/8 = 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: 80/70+18/8 40/70+36/8 40/70+18/16 40/70+54/8 40/70+18/24 40/70+90/8 40/70+18/40 40/70+18/56