Add 7/42 and 70/21
1st number: 7/42, 2nd number: 3 7/21
7/42 + 70/21 is 7/2.
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,
7/42 = 7 × 1/42 × 1 = 7/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
70/21 = 70 × 2/21 × 2 = 140/42 - Add the two like fractions:
7/42 + 140/42 = 7 + 140/42 = 147/42 - 147/42 simplified gives 7/2
- So, 7/42 + 70/21 = 7/2
In mixed form: 31/2
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