Add 30/35 and 2/21
30/35 + 2/21 is 20/21.
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,
30/35 = 30 × 3/35 × 3 = 90/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
2/21 = 2 × 5/21 × 5 = 10/105 - Add the two like fractions:
90/105 + 10/105 = 90 + 10/105 = 100/105 - 100/105 simplified gives 20/21
- So, 30/35 + 2/21 = 20/21
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