Add 90/40 and 60/45
1st number: 2 10/40, 2nd number: 1 15/45
90/40 + 60/45 is 43/12.
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,
60/45 = 60 × 8/45 × 8 = 480/360 - Add the two like fractions:
810/360 + 480/360 = 810 + 480/360 = 1290/360 - 1290/360 simplified gives 43/12
- So, 90/40 + 60/45 = 43/12
In mixed form: 37/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/80+60/45 90/40+60/90