Add 7/4 and 45/20
1st number: 1 3/4, 2nd number: 2 5/20
7/4 + 45/20 is 4/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 4 × 5 = 20,
7/4 = 7 × 5/4 × 5 = 35/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
45/20 = 45 × 1/20 × 1 = 45/20 - Add the two like fractions:
35/20 + 45/20 = 35 + 45/20 = 80/20 - 80/20 simplified gives 4/1
- So, 7/4 + 45/20 = 4/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/4+45/20 7/4+90/20 7/8+45/20 7/4+45/40 21/4+45/20 7/12+45/20 7/4+45/60 35/4+45/20 7/20+45/20 49/4+45/20 7/28+45/20