Add 28/98 and 20/5
1st number: 28/98, 2nd number: 4 0/5
28/98 + 20/5 is 30/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 5 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 98 × 5 = 490,
28/98 = 28 × 5/98 × 5 = 140/490 - Likewise, for the 2nd fraction, since 5 × 98 = 490,
20/5 = 20 × 98/5 × 98 = 1960/490 - Add the two like fractions:
140/490 + 1960/490 = 140 + 1960/490 = 2100/490 - 2100/490 simplified gives 30/7
- So, 28/98 + 20/5 = 30/7
In mixed form: 42/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/98+20/5 28/98+40/5 28/98+20/10 84/98+20/5 28/98+60/5 28/98+20/15 28/98+20/25 28/98+20/35