Add 30/45 and 1/40
30/45 + 1/40 is 83/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
30/45 = 30 × 8/45 × 8 = 240/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
1/40 = 1 × 9/40 × 9 = 9/360 - Add the two like fractions:
240/360 + 9/360 = 240 + 9/360 = 249/360 - 249/360 simplified gives 83/120
- So, 30/45 + 1/40 = 83/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/45+1/40 30/45+2/40 30/90+1/40 30/45+1/80 90/45+1/40 30/45+3/40 30/45+5/40 30/45+7/40