Add 30/21 and 45/35
1st number: 1 9/21, 2nd number: 1 10/35
30/21 + 45/35 is 19/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 35 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
30/21 = 30 × 5/21 × 5 = 150/105 - Likewise, for the 2nd fraction, since 35 × 3 = 105,
45/35 = 45 × 3/35 × 3 = 135/105 - Add the two like fractions:
150/105 + 135/105 = 150 + 135/105 = 285/105 - 285/105 simplified gives 19/7
- So, 30/21 + 45/35 = 19/7
In mixed form: 25/7
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