Add 63/90 and 21/84
63/90 + 21/84 is 19/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 84 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 90 × 14 = 1260,
63/90 = 63 × 14/90 × 14 = 882/1260 - Likewise, for the 2nd fraction, since 84 × 15 = 1260,
21/84 = 21 × 15/84 × 15 = 315/1260 - Add the two like fractions:
882/1260 + 315/1260 = 882 + 315/1260 = 1197/1260 - 1197/1260 simplified gives 19/20
- So, 63/90 + 21/84 = 19/20
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