Add 21/63 and 20/30
21/63 + 20/30 is 1/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
21/63 = 21 × 10/63 × 10 = 210/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
20/30 = 20 × 21/30 × 21 = 420/630 - Add the two like fractions:
210/630 + 420/630 = 210 + 420/630 = 630/630 - 630/630 simplified gives 1/1
- So, 21/63 + 20/30 = 1/1
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