Add 40/28 and 8/80
1st number: 1 12/28, 2nd number: 8/80
40/28 + 8/80 is 107/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 80 is 560
Next, find the equivalent fraction of both fractional numbers with denominator 560 - For the 1st fraction, since 28 × 20 = 560,
40/28 = 40 × 20/28 × 20 = 800/560 - Likewise, for the 2nd fraction, since 80 × 7 = 560,
8/80 = 8 × 7/80 × 7 = 56/560 - Add the two like fractions:
800/560 + 56/560 = 800 + 56/560 = 856/560 - 856/560 simplified gives 107/70
- So, 40/28 + 8/80 = 107/70
In mixed form: 137/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/28+8/80 40/28+16/80 40/56+8/80 40/28+24/80 40/84+8/80 40/28+40/80 40/28+56/80