Add 18/28 and 16/40
18/28 + 16/40 is 73/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 40 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 28 × 10 = 280,
18/28 = 18 × 10/28 × 10 = 180/280 - Likewise, for the 2nd fraction, since 40 × 7 = 280,
16/40 = 16 × 7/40 × 7 = 112/280 - Add the two like fractions:
180/280 + 112/280 = 180 + 112/280 = 292/280 - 292/280 simplified gives 73/70
- So, 18/28 + 16/40 = 73/70
In mixed form: 13/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28+16/40 18/28+32/40 18/56+16/40 18/28+16/80 54/28+16/40 18/28+48/40 18/84+16/40 90/28+16/40 18/28+80/40