Add 70/42 and 12/7
1st number: 1 28/42, 2nd number: 1 5/7
70/42 + 12/7 is 71/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 7 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
70/42 = 70 × 1/42 × 1 = 70/42 - Likewise, for the 2nd fraction, since 7 × 6 = 42,
12/7 = 12 × 6/7 × 6 = 72/42 - Add the two like fractions:
70/42 + 72/42 = 70 + 72/42 = 142/42 - 142/42 simplified gives 71/21
- So, 70/42 + 12/7 = 71/21
In mixed form: 38/21
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