Add 40/25 and 84/90
1st number: 1 15/25, 2nd number: 84/90
40/25 + 84/90 is 38/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 90 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
40/25 = 40 × 18/25 × 18 = 720/450 - Likewise, for the 2nd fraction, since 90 × 5 = 450,
84/90 = 84 × 5/90 × 5 = 420/450 - Add the two like fractions:
720/450 + 420/450 = 720 + 420/450 = 1140/450 - 1140/450 simplified gives 38/15
- So, 40/25 + 84/90 = 38/15
In mixed form: 28/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/25+84/90 40/50+84/90 40/75+84/90