Add 75/20 and 90/48
1st number: 3 15/20, 2nd number: 1 42/48
75/20 + 90/48 is 45/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 48 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 20 × 12 = 240,
75/20 = 75 × 12/20 × 12 = 900/240 - Likewise, for the 2nd fraction, since 48 × 5 = 240,
90/48 = 90 × 5/48 × 5 = 450/240 - Add the two like fractions:
900/240 + 450/240 = 900 + 450/240 = 1350/240 - 1350/240 simplified gives 45/8
- So, 75/20 + 90/48 = 45/8
In mixed form: 55/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/40+90/48 75/20+90/96 75/60+90/48