Add 21/63 and 8/45
21/63 + 8/45 is 23/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
21/63 = 21 × 5/63 × 5 = 105/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
8/45 = 8 × 7/45 × 7 = 56/315 - Add the two like fractions:
105/315 + 56/315 = 105 + 56/315 = 161/315 - 161/315 simplified gives 23/45
- So, 21/63 + 8/45 = 23/45
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