Add 70/42 and 21/4
1st number: 1 28/42, 2nd number: 5 1/4
70/42 + 21/4 is 83/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 4 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 4 × 21 = 84,
21/4 = 21 × 21/4 × 21 = 441/84 - Add the two like fractions:
140/84 + 441/84 = 140 + 441/84 = 581/84 - 581/84 simplified gives 83/12
- So, 70/42 + 21/4 = 83/12
In mixed form: 611/12
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