Add 45/70 and 25/20
1st number: 45/70, 2nd number: 1 5/20
45/70 + 25/20 is 53/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 70 × 2 = 140,
45/70 = 45 × 2/70 × 2 = 90/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
25/20 = 25 × 7/20 × 7 = 175/140 - Add the two like fractions:
90/140 + 175/140 = 90 + 175/140 = 265/140 - 265/140 simplified gives 53/28
- So, 45/70 + 25/20 = 53/28
In mixed form: 125/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/70+25/20 45/70+50/20 45/70+25/40 45/70+75/20 45/70+25/60