Add 20/63 and 4/45
20/63 + 4/45 is 128/315.
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,
20/63 = 20 × 5/63 × 5 = 100/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
4/45 = 4 × 7/45 × 7 = 28/315 - Add the two like fractions:
100/315 + 28/315 = 100 + 28/315 = 128/315 - So, 20/63 + 4/45 = 128/315
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