Add 90/5 and 28/40
1st number: 18 0/5, 2nd number: 28/40
90/5 + 28/40 is 187/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 5 × 8 = 40,
90/5 = 90 × 8/5 × 8 = 720/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
28/40 = 28 × 1/40 × 1 = 28/40 - Add the two like fractions:
720/40 + 28/40 = 720 + 28/40 = 748/40 - 748/40 simplified gives 187/10
- So, 90/5 + 28/40 = 187/10
In mixed form: 187/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/5+56/40 90/10+28/40 90/5+28/80 90/5+84/40 90/15+28/40 90/25+28/40 90/35+28/40