Add 20/70 and 12/63
20/70 + 12/63 is 10/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 70 × 9 = 630,
20/70 = 20 × 9/70 × 9 = 180/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
12/63 = 12 × 10/63 × 10 = 120/630 - Add the two like fractions:
180/630 + 120/630 = 180 + 120/630 = 300/630 - 300/630 simplified gives 10/21
- So, 20/70 + 12/63 = 10/21
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