Add 75/5 and 21/63, Solve 15 0/5 + 21/63 as a fraction

Add 75/5 and 21/63

1^st number: 15 0/5, 2^nd number: 21/63

75/5 + 21/63 is 46/3.

Find the least common denominator or LCM of the two denominators:
LCM of 5 and 63 is 315

Next, find the equivalent fraction of both fractional numbers with denominator 315
For the 1st fraction, since 5 × 63 = 315,
75/5 = 75 × 63/5 × 63 = 4725/315
Likewise, for the 2nd fraction, since 63 × 5 = 315,
21/63 = 21 × 5/63 × 5 = 105/315
Add the two like fractions:
4725/315 + 105/315 = 4725 + 105/315 = 4830/315
4830/315 simplified gives 46/3
So, 75/5 + 21/63 = 46/3
In mixed form: 151/3

MathStep (Works offline)

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