Add 12/18 and 21/35
12/18 + 21/35 is 19/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 35 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 18 × 35 = 630,
12/18 = 12 × 35/18 × 35 = 420/630 - Likewise, for the 2nd fraction, since 35 × 18 = 630,
21/35 = 21 × 18/35 × 18 = 378/630 - Add the two like fractions:
420/630 + 378/630 = 420 + 378/630 = 798/630 - 798/630 simplified gives 19/15
- So, 12/18 + 21/35 = 19/15
In mixed form: 14/15
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