Add 12/42 and 70/21
1st number: 12/42, 2nd number: 3 7/21
12/42 + 70/21 is 76/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
12/42 = 12 × 1/42 × 1 = 12/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
70/21 = 70 × 2/21 × 2 = 140/42 - Add the two like fractions:
12/42 + 140/42 = 12 + 140/42 = 152/42 - 152/42 simplified gives 76/21
- So, 12/42 + 70/21 = 76/21
In mixed form: 313/21
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