Add 21/90 and 8/98
21/90 + 8/98 is 463/1470.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 98 is 4410
Next, find the equivalent fraction of both fractional numbers with denominator 4410 - For the 1st fraction, since 90 × 49 = 4410,
21/90 = 21 × 49/90 × 49 = 1029/4410 - Likewise, for the 2nd fraction, since 98 × 45 = 4410,
8/98 = 8 × 45/98 × 45 = 360/4410 - Add the two like fractions:
1029/4410 + 360/4410 = 1029 + 360/4410 = 1389/4410 - 1389/4410 simplified gives 463/1470
- So, 21/90 + 8/98 = 463/1470
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/90+8/98 21/90+16/98 63/90+8/98 21/90+24/98 21/90+40/98 21/90+56/98