Add 7/18 and 8/40
7/18 + 8/40 is 53/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
7/18 = 7 × 20/18 × 20 = 140/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
8/40 = 8 × 9/40 × 9 = 72/360 - Add the two like fractions:
140/360 + 72/360 = 140 + 72/360 = 212/360 - 212/360 simplified gives 53/90
- So, 7/18 + 8/40 = 53/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18+8/40 7/18+16/40 7/36+8/40 7/18+8/80 21/18+8/40 7/18+24/40 7/54+8/40 35/18+8/40 7/90+8/40 49/18+8/40 7/18+56/40