Add 3/90 and 25/84
3/90 + 25/84 is 139/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
3/90 = 3 × 14/90 × 14 = 42/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
25/84 = 25 × 15/84 × 15 = 375/1260 - Add the two like fractions:
42/1260 + 375/1260 = 42 + 375/1260 = 417/1260 - 417/1260 simplified gives 139/420
- So, 3/90 + 25/84 = 139/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/90+25/84 3/90+50/84 9/90+25/84 3/90+75/84 15/90+25/84 21/90+25/84