Add 12/35 and 4/21
12/35 + 4/21 is 8/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 35 × 3 = 105,
12/35 = 12 × 3/35 × 3 = 36/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
4/21 = 4 × 5/21 × 5 = 20/105 - Add the two like fractions:
36/105 + 20/105 = 36 + 20/105 = 56/105 - 56/105 simplified gives 8/15
- So, 12/35 + 4/21 = 8/15
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