Add 90/40 and 4/45
1st number: 2 10/40, 2nd number: 4/45
90/40 + 4/45 is 421/180.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
90/40 = 90 × 9/40 × 9 = 810/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
4/45 = 4 × 8/45 × 8 = 32/360 - Add the two like fractions:
810/360 + 32/360 = 810 + 32/360 = 842/360 - 842/360 simplified gives 421/180
- So, 90/40 + 4/45 = 421/180
In mixed form: 261/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+8/45 90/80+4/45 90/40+4/90 90/40+12/45 90/40+20/45 90/40+28/45