Add 21/8 and 70/63, Solve 2 5/8 + 1 7/63 as a fraction

Add 21/8 and 70/63

1^st number: 2 5/8, 2^nd number: 1 7/63

21/8 + 70/63 is 269/72.

Find the least common denominator or LCM of the two denominators:
LCM of 8 and 63 is 504

Next, find the equivalent fraction of both fractional numbers with denominator 504
For the 1st fraction, since 8 × 63 = 504,
21/8 = 21 × 63/8 × 63 = 1323/504
Likewise, for the 2nd fraction, since 63 × 8 = 504,
70/63 = 70 × 8/63 × 8 = 560/504
Add the two like fractions:
1323/504 + 560/504 = 1323 + 560/504 = 1883/504
1883/504 simplified gives 269/72
So, 21/8 + 70/63 = 269/72
In mixed form: 353/72

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