Add 18/80 and 70/28
1st number: 18/80, 2nd number: 2 14/28
18/80 + 70/28 is 109/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 28 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 80 × 7 = 560,
18/80 = 18 × 7/80 × 7 = 126/560 - Likewise, for the 2nd fraction, since 28 × 20 = 560,
70/28 = 70 × 20/28 × 20 = 1400/560 - Add the two like fractions:
126/560 + 1400/560 = 126 + 1400/560 = 1526/560 - 1526/560 simplified gives 109/40
- So, 18/80 + 70/28 = 109/40
In mixed form: 229/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/80+70/28 18/80+70/56 54/80+70/28 18/80+70/84 90/80+70/28