Add 45/63 and 7/10, Solve 45/63 + 7/10 as a fraction

Add 45/63 and 7/10

45/63 + 7/10 is 99/70.

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

Next, find the equivalent fraction of both fractional numbers with denominator 630
For the 1st fraction, since 63 × 10 = 630,
45/63 = 45 × 10/63 × 10 = 450/630
Likewise, for the 2nd fraction, since 10 × 63 = 630,
7/10 = 7 × 63/10 × 63 = 441/630
Add the two like fractions:
450/630 + 441/630 = 450 + 441/630 = 891/630
891/630 simplified gives 99/70
So, 45/63 + 7/10 = 99/70
In mixed form: 129/70

MathStep (Works offline)

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