Add 10/63 and 20/90
10/63 + 20/90 is 8/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
10/63 = 10 × 10/63 × 10 = 100/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
20/90 = 20 × 7/90 × 7 = 140/630 - Add the two like fractions:
100/630 + 140/630 = 100 + 140/630 = 240/630 - 240/630 simplified gives 8/21
- So, 10/63 + 20/90 = 8/21
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