Add 42/56 and 36/21
1st number: 42/56, 2nd number: 1 15/21
42/56 + 36/21 is 69/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 21 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 56 × 3 = 168,
42/56 = 42 × 3/56 × 3 = 126/168 - Likewise, for the 2nd fraction, since 21 × 8 = 168,
36/21 = 36 × 8/21 × 8 = 288/168 - Add the two like fractions:
126/168 + 288/168 = 126 + 288/168 = 414/168 - 414/168 simplified gives 69/28
- So, 42/56 + 36/21 = 69/28
In mixed form: 213/28
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