Add 7/84 and 25/90
7/84 + 25/90 is 13/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 90 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
7/84 = 7 × 15/84 × 15 = 105/1260 - Likewise, for the 2nd fraction, since 90 × 14 = 1260,
25/90 = 25 × 14/90 × 14 = 350/1260 - Add the two like fractions:
105/1260 + 350/1260 = 105 + 350/1260 = 455/1260 - 455/1260 simplified gives 13/36
- So, 7/84 + 25/90 = 13/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/84+25/90 7/84+50/90 21/84+25/90 7/84+75/90 35/84+25/90 49/84+25/90