Add 1/80 and 30/18
1st number: 1/80, 2nd number: 1 12/18
1/80 + 30/18 is 403/240.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 18 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
1/80 = 1 × 9/80 × 9 = 9/720 - Likewise, for the 2nd fraction, since 18 × 40 = 720,
30/18 = 30 × 40/18 × 40 = 1200/720 - Add the two like fractions:
9/720 + 1200/720 = 9 + 1200/720 = 1209/720 - 1209/720 simplified gives 403/240
- So, 1/80 + 30/18 = 403/240
In mixed form: 1163/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/80+30/18 1/80+60/18 1/80+30/36 3/80+30/18 1/80+90/18 1/80+30/54 5/80+30/18 1/80+30/90 7/80+30/18