Add 8/21 and 42/48
8/21 + 42/48 is 211/168.
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,
8/21 = 8 × 16/21 × 16 = 128/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
42/48 = 42 × 7/48 × 7 = 294/336 - Add the two like fractions:
128/336 + 294/336 = 128 + 294/336 = 422/336 - 422/336 simplified gives 211/168
- So, 8/21 + 42/48 = 211/168
In mixed form: 143/168
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