Add 42/56 and 18/70
42/56 + 18/70 is 141/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 70 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
42/56 = 42 × 5/56 × 5 = 210/280 - Likewise, for the 2nd fraction, since 70 × 4 = 280,
18/70 = 18 × 4/70 × 4 = 72/280 - Add the two like fractions:
210/280 + 72/280 = 210 + 72/280 = 282/280 - 282/280 simplified gives 141/140
- So, 42/56 + 18/70 = 141/140
In mixed form: 11/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/56+18/70 42/56+36/70 42/56+54/70 42/56+90/70