Add 30/49 and 15/40
30/49 + 15/40 is 387/392.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 40 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 49 × 40 = 1960,
30/49 = 30 × 40/49 × 40 = 1200/1960 - Likewise, for the 2nd fraction, since 40 × 49 = 1960,
15/40 = 15 × 49/40 × 49 = 735/1960 - Add the two like fractions:
1200/1960 + 735/1960 = 1200 + 735/1960 = 1935/1960 - 1935/1960 simplified gives 387/392
- So, 30/49 + 15/40 = 387/392
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/49+15/40 30/49+30/40 30/98+15/40 30/49+15/80 90/49+15/40 30/49+45/40 30/49+75/40