Add 12/63 and 21/70
12/63 + 21/70 is 103/210.
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,
21/70 = 21 × 9/70 × 9 = 189/630 - Add the two like fractions:
120/630 + 189/630 = 120 + 189/630 = 309/630 - 309/630 simplified gives 103/210
- So, 12/63 + 21/70 = 103/210
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