Add 12/30 and 42/63
12/30 + 42/63 is 16/15.
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,
12/30 = 12 × 21/30 × 21 = 252/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
42/63 = 42 × 10/63 × 10 = 420/630 - Add the two like fractions:
252/630 + 420/630 = 252 + 420/630 = 672/630 - 672/630 simplified gives 16/15
- So, 12/30 + 42/63 = 16/15
In mixed form: 11/15
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