Add 70/40 and 2/90
1st number: 1 30/40, 2nd number: 2/90
70/40 + 2/90 is 319/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
70/40 = 70 × 9/40 × 9 = 630/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
2/90 = 2 × 4/90 × 4 = 8/360 - Add the two like fractions:
630/360 + 8/360 = 630 + 8/360 = 638/360 - 638/360 simplified gives 319/180
- So, 70/40 + 2/90 = 319/180
In mixed form: 1139/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40+4/90 70/80+2/90 70/40+6/90 70/40+10/90 70/40+14/90