Add 1/42 and 30/25, Solve 1/42 + 1 5/25 as a fraction

Add 1/42 and 30/25

1^st number: 1/42, 2^nd number: 1 5/25

1/42 + 30/25 is 257/210.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 25 is 1050

Next, find the equivalent fraction of both fractional numbers with denominator 1050
For the 1st fraction, since 42 × 25 = 1050,
1/42 = 1 × 25/42 × 25 = 25/1050
Likewise, for the 2nd fraction, since 25 × 42 = 1050,
30/25 = 30 × 42/25 × 42 = 1260/1050
Add the two like fractions:
25/1050 + 1260/1050 = 25 + 1260/1050 = 1285/1050
1285/1050 simplified gives 257/210
So, 1/42 + 30/25 = 257/210
In mixed form: 147/210

MathStep (Works offline)

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