Add 60/45 and 5/42, Solve 1 15/45 + 5/42 as a fraction

Add 60/45 and 5/42

1^st number: 1 15/45, 2^nd number: 5/42

60/45 + 5/42 is 61/42.

Find the least common denominator or LCM of the two denominators:
LCM of 45 and 42 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 45 × 14 = 630,
60/45 = 60 × 14/45 × 14 = 840/630
Likewise, for the 2nd fraction, since 42 × 15 = 630,
5/42 = 5 × 15/42 × 15 = 75/630
Add the two like fractions:
840/630 + 75/630 = 840 + 75/630 = 915/630
915/630 simplified gives 61/42
So, 60/45 + 5/42 = 61/42
In mixed form: 119/42

MathStep (Works offline)

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