Add 40/35 and 12/21
1st number: 1 5/35, 2nd number: 12/21
40/35 + 12/21 is 12/7.
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,
40/35 = 40 × 3/35 × 3 = 120/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
12/21 = 12 × 5/21 × 5 = 60/105 - Add the two like fractions:
120/105 + 60/105 = 120 + 60/105 = 180/105 - 180/105 simplified gives 12/7
- So, 40/35 + 12/21 = 12/7
In mixed form: 15/7
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