Add 25/21 and 35/32, Solve 1 4/21 + 1 3/32 as a fraction

Add 25/21 and 35/32

1^st number: 1 4/21, 2^nd number: 1 3/32

25/21 + 35/32 is 1535/672.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 32 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 21 × 32 = 672,
25/21 = 25 × 32/21 × 32 = 800/672
Likewise, for the 2nd fraction, since 32 × 21 = 672,
35/32 = 35 × 21/32 × 21 = 735/672
Add the two like fractions:
800/672 + 735/672 = 800 + 735/672 = 1535/672
So, 25/21 + 35/32 = 1535/672
In mixed form: 2191/672

MathStep (Works offline)

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