Add 42/21 and 84/48
1st number: 2 0/21, 2nd number: 1 36/48
42/21 + 84/48 is 15/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
42/21 = 42 × 16/21 × 16 = 672/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
84/48 = 84 × 7/48 × 7 = 588/336 - Add the two like fractions:
672/336 + 588/336 = 672 + 588/336 = 1260/336 - 1260/336 simplified gives 15/4
- So, 42/21 + 84/48 = 15/4
In mixed form: 33/4
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