Add 7/30 and 21/63
7/30 + 21/63 is 17/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
7/30 = 7 × 21/30 × 21 = 147/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
21/63 = 21 × 10/63 × 10 = 210/630 - Add the two like fractions:
147/630 + 210/630 = 147 + 210/630 = 357/630 - 357/630 simplified gives 17/30
- So, 7/30 + 21/63 = 17/30
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