Add 70/40 and 5/90
1st number: 1 30/40, 2nd number: 5/90
70/40 + 5/90 is 65/36.
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,
5/90 = 5 × 4/90 × 4 = 20/360 - Add the two like fractions:
630/360 + 20/360 = 630 + 20/360 = 650/360 - 650/360 simplified gives 65/36
- So, 70/40 + 5/90 = 65/36
In mixed form: 129/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40+10/90 70/80+5/90 70/40+15/90 70/40+25/90 70/40+35/90