Add 32/21 and 14/40, Solve 1 11/21 + 14/40 as a fraction

Add 32/21 and 14/40

1^st number: 1 11/21, 2^nd number: 14/40

32/21 + 14/40 is 787/420.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 40 is 840

Next, find the equivalent fraction of both fractional numbers with denominator 840
For the 1st fraction, since 21 × 40 = 840,
32/21 = 32 × 40/21 × 40 = 1280/840
Likewise, for the 2nd fraction, since 40 × 21 = 840,
14/40 = 14 × 21/40 × 21 = 294/840
Add the two like fractions:
1280/840 + 294/840 = 1280 + 294/840 = 1574/840
1574/840 simplified gives 787/420
So, 32/21 + 14/40 = 787/420
In mixed form: 1367/420

MathStep (Works offline)

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