Add 40/90 and 84/80
1st number: 40/90, 2nd number: 1 4/80
40/90 + 84/80 is 269/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 90 × 8 = 720,
40/90 = 40 × 8/90 × 8 = 320/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
84/80 = 84 × 9/80 × 9 = 756/720 - Add the two like fractions:
320/720 + 756/720 = 320 + 756/720 = 1076/720 - 1076/720 simplified gives 269/180
- So, 40/90 + 84/80 = 269/180
In mixed form: 189/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/90+84/80