Add 10/40 and 70/90
10/40 + 70/90 is 37/36.
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,
10/40 = 10 × 9/40 × 9 = 90/360 - Likewise, for the 2nd fraction, since 90 × 4 = 360,
70/90 = 70 × 4/90 × 4 = 280/360 - Add the two like fractions:
90/360 + 280/360 = 90 + 280/360 = 370/360 - 370/360 simplified gives 37/36
- So, 10/40 + 70/90 = 37/36
In mixed form: 11/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40+70/90 10/80+70/90 30/40+70/90 50/40+70/90 70/40+70/90