Add 30/90 and 1/40
30/90 + 1/40 is 43/120.
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,
30/90 = 30 × 4/90 × 4 = 120/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
1/40 = 1 × 9/40 × 9 = 9/360 - Add the two like fractions:
120/360 + 9/360 = 120 + 9/360 = 129/360 - 129/360 simplified gives 43/120
- So, 30/90 + 1/40 = 43/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/90+1/40 30/90+2/40 30/90+1/80 30/90+3/40 30/90+5/40 30/90+7/40