Add 21/8 and 90/63
1st number: 2 5/8, 2nd number: 1 27/63
21/8 + 90/63 is 227/56.
Steps for adding fractions
- 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,
90/63 = 90 × 8/63 × 8 = 720/504 - Add the two like fractions:
1323/504 + 720/504 = 1323 + 720/504 = 2043/504 - 2043/504 simplified gives 227/56
- So, 21/8 + 90/63 = 227/56
In mixed form: 43/56
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