Add 40/5 and 90/9
1st number: 8 0/5, 2nd number: 10 0/9
40/5 + 90/9 is 18/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 9 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 5 × 9 = 45,
40/5 = 40 × 9/5 × 9 = 360/45 - Likewise, for the 2nd fraction, since 9 × 5 = 45,
90/9 = 90 × 5/9 × 5 = 450/45 - Add the two like fractions:
360/45 + 450/45 = 360 + 450/45 = 810/45 - 810/45 simplified gives 18/1
- So, 40/5 + 90/9 = 18/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/5+90/9 40/10+90/9 40/5+90/18 40/15+90/9 40/5+90/27 40/25+90/9 40/5+90/45 40/35+90/9 40/5+90/63