Add 42/21 and 70/4
1st number: 2 0/21, 2nd number: 17 2/4
42/21 + 70/4 is 39/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
42/21 = 42 × 4/21 × 4 = 168/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
70/4 = 70 × 21/4 × 21 = 1470/84 - Add the two like fractions:
168/84 + 1470/84 = 168 + 1470/84 = 1638/84 - 1638/84 simplified gives 39/2
- So, 42/21 + 70/4 = 39/2
In mixed form: 191/2
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