Add 30/40 and 4/45
30/40 + 4/45 is 151/180.
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,
30/40 = 30 × 9/40 × 9 = 270/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
4/45 = 4 × 8/45 × 8 = 32/360 - Add the two like fractions:
270/360 + 32/360 = 270 + 32/360 = 302/360 - 302/360 simplified gives 151/180
- So, 30/40 + 4/45 = 151/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/40+4/45 30/40+8/45 30/80+4/45 30/40+4/90 90/40+4/45 30/40+12/45 30/40+20/45 30/40+28/45