Add 70/42 and 21/84
1st number: 1 28/42, 2nd number: 21/84
70/42 + 21/84 is 23/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
70/42 = 70 × 2/42 × 2 = 140/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
21/84 = 21 × 1/84 × 1 = 21/84 - Add the two like fractions:
140/84 + 21/84 = 140 + 21/84 = 161/84 - 161/84 simplified gives 23/12
- So, 70/42 + 21/84 = 23/12
In mixed form: 111/12
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