Add 3/8 and 40/45
3/8 + 40/45 is 91/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 8 × 45 = 360,
3/8 = 3 × 45/8 × 45 = 135/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
40/45 = 40 × 8/45 × 8 = 320/360 - Add the two like fractions:
135/360 + 320/360 = 135 + 320/360 = 455/360 - 455/360 simplified gives 91/72
- So, 3/8 + 40/45 = 91/72
In mixed form: 119/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/8+40/45 3/8+80/45 3/16+40/45 3/8+40/90 9/8+40/45 3/24+40/45 15/8+40/45 3/40+40/45 21/8+40/45 3/56+40/45