Add 30/63 and 21/70
30/63 + 21/70 is 163/210.
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,
30/63 = 30 × 10/63 × 10 = 300/630 - Likewise, for the 2nd fraction, since 70 × 9 = 630,
21/70 = 21 × 9/70 × 9 = 189/630 - Add the two like fractions:
300/630 + 189/630 = 300 + 189/630 = 489/630 - 489/630 simplified gives 163/210
- So, 30/63 + 21/70 = 163/210
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