Add 54/8 and 42/70
1st number: 6 6/8, 2nd number: 42/70
54/8 + 42/70 is 147/20.
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,
54/8 = 54 × 35/8 × 35 = 1890/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
42/70 = 42 × 4/70 × 4 = 168/280 - Add the two like fractions:
1890/280 + 168/280 = 1890 + 168/280 = 2058/280 - 2058/280 simplified gives 147/20
- So, 54/8 + 42/70 = 147/20
In mixed form: 77/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/8+84/70 54/16+42/70 54/24+42/70 54/40+42/70 54/56+42/70