Add 18/70 and 72/49
1st number: 18/70, 2nd number: 1 23/49
18/70 + 72/49 is 423/245.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 49 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 70 × 7 = 490,
18/70 = 18 × 7/70 × 7 = 126/490 - Likewise, for the 2nd fraction, since 49 × 10 = 490,
72/49 = 72 × 10/49 × 10 = 720/490 - Add the two like fractions:
126/490 + 720/490 = 126 + 720/490 = 846/490 - 846/490 simplified gives 423/245
- So, 18/70 + 72/49 = 423/245
In mixed form: 1178/245
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/70+72/49 18/70+72/98 54/70+72/49 90/70+72/49