Add 15/32 and 90/42, Solve 15/32 + 2 6/42 as a fraction

Add 15/32 and 90/42

1^st number: 15/32, 2^nd number: 2 6/42

15/32 + 90/42 is 585/224.

Find the least common denominator or LCM of the two denominators:
LCM of 32 and 42 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 32 × 21 = 672,
15/32 = 15 × 21/32 × 21 = 315/672
Likewise, for the 2nd fraction, since 42 × 16 = 672,
90/42 = 90 × 16/42 × 16 = 1440/672
Add the two like fractions:
315/672 + 1440/672 = 315 + 1440/672 = 1755/672
1755/672 simplified gives 585/224
So, 15/32 + 90/42 = 585/224
In mixed form: 2137/224

MathStep (Works offline)

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