Add 90/98 and 12/40
90/98 + 12/40 is 597/490.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 98 and 40 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 98 × 20 = 1960,
90/98 = 90 × 20/98 × 20 = 1800/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
12/40 = 12 × 49/40 × 49 = 588/1960 - Add the two like fractions:
1800/1960 + 588/1960 = 1800 + 588/1960 = 2388/1960 - 2388/1960 simplified gives 597/490
- So, 90/98 + 12/40 = 597/490
In mixed form: 1107/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/98+24/40 90/98+12/80 90/98+36/40 90/98+60/40 90/98+84/40