Add 25/20 and 35/7, Solve 1 5/20 + 5 0/7 as a fraction

Add 25/20 and 35/7

1^st number: 1 5/20, 2^nd number: 5 0/7

25/20 + 35/7 is 25/4.

Find the least common denominator or LCM of the two denominators:
LCM of 20 and 7 is 140

Next, find the equivalent fraction of both fractional numbers with denominator 140
For the 1st fraction, since 20 × 7 = 140,
25/20 = 25 × 7/20 × 7 = 175/140
Likewise, for the 2nd fraction, since 7 × 20 = 140,
35/7 = 35 × 20/7 × 20 = 700/140
Add the two like fractions:
175/140 + 700/140 = 175 + 700/140 = 875/140
875/140 simplified gives 25/4
So, 25/20 + 35/7 = 25/4
In mixed form: 61/4

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad