Add 20/80 and 21/63
20/80 + 21/63 is 7/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 63 is 5040
Next, find the equivalent fraction of both fractional numbers with denominator 5040 - For the 1st fraction, since 80 × 63 = 5040,
20/80 = 20 × 63/80 × 63 = 1260/5040 - Likewise, for the 2nd fraction, since 63 × 80 = 5040,
21/63 = 21 × 80/63 × 80 = 1680/5040 - Add the two like fractions:
1260/5040 + 1680/5040 = 1260 + 1680/5040 = 2940/5040 - 2940/5040 simplified gives 7/12
- So, 20/80 + 21/63 = 7/12
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