Add 21/4 and 90/63
1st number: 5 1/4, 2nd number: 1 27/63
21/4 + 90/63 is 187/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 4 × 63 = 252,
21/4 = 21 × 63/4 × 63 = 1323/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
90/63 = 90 × 4/63 × 4 = 360/252 - Add the two like fractions:
1323/252 + 360/252 = 1323 + 360/252 = 1683/252 - 1683/252 simplified gives 187/28
- So, 21/4 + 90/63 = 187/28
In mixed form: 619/28
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