Add 60/42 and 15/27, Solve 1 18/42 + 15/27 as a fraction

Add 60/42 and 15/27

1^st number: 1 18/42, 2^nd number: 15/27

60/42 + 15/27 is 125/63.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 27 is 378

Next, find the equivalent fraction of both fractional numbers with denominator 378
For the 1st fraction, since 42 × 9 = 378,
60/42 = 60 × 9/42 × 9 = 540/378
Likewise, for the 2nd fraction, since 27 × 14 = 378,
15/27 = 15 × 14/27 × 14 = 210/378
Add the two like fractions:
540/378 + 210/378 = 540 + 210/378 = 750/378
750/378 simplified gives 125/63
So, 60/42 + 15/27 = 125/63
In mixed form: 162/63

MathStep (Works offline)

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