Add 70/40 and 9/45
1st number: 1 30/40, 2nd number: 9/45
70/40 + 9/45 is 39/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 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 45 × 8 = 360,
9/45 = 9 × 8/45 × 8 = 72/360 - Add the two like fractions:
630/360 + 72/360 = 630 + 72/360 = 702/360 - 702/360 simplified gives 39/20
- So, 70/40 + 9/45 = 39/20
In mixed form: 119/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/40+18/45 70/80+9/45 70/40+9/90 70/40+27/45 70/40+63/45