Add 70/72 and 50/63, Solve 70/72 + 50/63 as a fraction

Add 70/72 and 50/63

70/72 + 50/63 is 445/252.

Find the least common denominator or LCM of the two denominators:
LCM of 72 and 63 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 72 × 7 = 504,
70/72 = 70 × 7/72 × 7 = 490/504
Likewise, for the 2nd fraction, since 63 × 8 = 504,
50/63 = 50 × 8/63 × 8 = 400/504
Add the two like fractions:
490/504 + 400/504 = 490 + 400/504 = 890/504
890/504 simplified gives 445/252
So, 70/72 + 50/63 = 445/252
In mixed form: 1193/252

MathStep (Works offline)

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