Add 7/80 and 84/90
7/80 + 84/90 is 49/48.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 90 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
7/80 = 7 × 9/80 × 9 = 63/720 - Likewise, for the 2nd fraction, since 90 × 8 = 720,
84/90 = 84 × 8/90 × 8 = 672/720 - Add the two like fractions:
63/720 + 672/720 = 63 + 672/720 = 735/720 - 735/720 simplified gives 49/48
- So, 7/80 + 84/90 = 49/48
In mixed form: 11/48
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/80+84/90 21/80+84/90 35/80+84/90 49/80+84/90