Add 90/15 and 25/42, Solve 6 0/15 + 25/42 as a fraction

Add 90/15 and 25/42

1^st number: 6 0/15, 2^nd number: 25/42

90/15 + 25/42 is 277/42.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 42 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 15 × 14 = 210,
90/15 = 90 × 14/15 × 14 = 1260/210
Likewise, for the 2nd fraction, since 42 × 5 = 210,
25/42 = 25 × 5/42 × 5 = 125/210
Add the two like fractions:
1260/210 + 125/210 = 1260 + 125/210 = 1385/210
1385/210 simplified gives 277/42
So, 90/15 + 25/42 = 277/42
In mixed form: 625/42

MathStep (Works offline)

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