Add 63/20 and 90/8
1st number: 3 3/20, 2nd number: 11 2/8
63/20 + 90/8 is 72/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
63/20 = 63 × 2/20 × 2 = 126/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
90/8 = 90 × 5/8 × 5 = 450/40 - Add the two like fractions:
126/40 + 450/40 = 126 + 450/40 = 576/40 - 576/40 simplified gives 72/5
- So, 63/20 + 90/8 = 72/5
In mixed form: 142/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/40+90/8 63/20+90/16 63/60+90/8 63/20+90/24 63/20+90/40 63/20+90/56