Add 12/63 and 30/70
12/63 + 30/70 is 13/21.
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,
12/63 = 12 × 10/63 × 10 = 120/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
30/70 = 30 × 9/70 × 9 = 270/630 - Add the two like fractions:
120/630 + 270/630 = 120 + 270/630 = 390/630 - 390/630 simplified gives 13/21
- So, 12/63 + 30/70 = 13/21
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