Add 4/30 and 40/72
4/30 + 40/72 is 31/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 30 × 12 = 360,
4/30 = 4 × 12/30 × 12 = 48/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
40/72 = 40 × 5/72 × 5 = 200/360 - Add the two like fractions:
48/360 + 200/360 = 48 + 200/360 = 248/360 - 248/360 simplified gives 31/45
- So, 4/30 + 40/72 = 31/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/30+40/72 4/30+80/72 4/60+40/72 12/30+40/72 4/90+40/72 20/30+40/72 28/30+40/72