Add 18/40 and 25/35
18/40 + 25/35 is 163/140.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 35 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 40 × 7 = 280,
18/40 = 18 × 7/40 × 7 = 126/280 - Likewise, for the 2nd fraction, since 35 × 8 = 280,
25/35 = 25 × 8/35 × 8 = 200/280 - Add the two like fractions:
126/280 + 200/280 = 126 + 200/280 = 326/280 - 326/280 simplified gives 163/140
- So, 18/40 + 25/35 = 163/140
In mixed form: 123/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/40+25/35 18/40+50/35 18/80+25/35 18/40+25/70 54/40+25/35 18/40+75/35 90/40+25/35