Add 42/10 and 25/63, Solve 4 2/10 + 25/63 as a fraction

Add 42/10 and 25/63

1^st number: 4 2/10, 2^nd number: 25/63

42/10 + 25/63 is 1448/315.

Find the least common denominator or LCM of the two denominators:
LCM of 10 and 63 is 630

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 10 × 63 = 630,
42/10 = 42 × 63/10 × 63 = 2646/630
Likewise, for the 2nd fraction, since 63 × 10 = 630,
25/63 = 25 × 10/63 × 10 = 250/630
Add the two like fractions:
2646/630 + 250/630 = 2646 + 250/630 = 2896/630
2896/630 simplified gives 1448/315
So, 42/10 + 25/63 = 1448/315
In mixed form: 4188/315

MathStep (Works offline)

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