Add 36/90 and 70/40
1st number: 36/90, 2nd number: 1 30/40
36/90 + 70/40 is 43/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 90 × 4 = 360,
36/90 = 36 × 4/90 × 4 = 144/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
70/40 = 70 × 9/40 × 9 = 630/360 - Add the two like fractions:
144/360 + 630/360 = 144 + 630/360 = 774/360 - 774/360 simplified gives 43/20
- So, 36/90 + 70/40 = 43/20
In mixed form: 23/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/90+70/40 36/90+70/80