Add 20/63 and 18/70
20/63 + 18/70 is 181/315.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 70 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
20/63 = 20 × 10/63 × 10 = 200/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
18/70 = 18 × 9/70 × 9 = 162/630 - Add the two like fractions:
200/630 + 162/630 = 200 + 162/630 = 362/630 - 362/630 simplified gives 181/315
- So, 20/63 + 18/70 = 181/315
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