Add 24/40 and 18/42
24/40 + 18/42 is 36/35.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 42 is 840
Next, find the equivalent fraction of both fractional numbers with denominator 840 - For the 1st fraction, since 40 × 21 = 840,
24/40 = 24 × 21/40 × 21 = 504/840 - Likewise, for the 2nd fraction, since 42 × 20 = 840,
18/42 = 18 × 20/42 × 20 = 360/840 - Add the two like fractions:
504/840 + 360/840 = 504 + 360/840 = 864/840 - 864/840 simplified gives 36/35
- So, 24/40 + 18/42 = 36/35
In mixed form: 11/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/40+18/42 24/40+36/42 24/80+18/42 24/40+18/84 72/40+18/42 24/40+54/42 24/40+90/42