Add 21/42 and 18/48
21/42 + 18/48 is 7/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 48 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
21/42 = 21 × 8/42 × 8 = 168/336 - Likewise, for the 2nd fraction, since 48 × 7 = 336,
18/48 = 18 × 7/48 × 7 = 126/336 - Add the two like fractions:
168/336 + 126/336 = 168 + 126/336 = 294/336 - 294/336 simplified gives 7/8
- So, 21/42 + 18/48 = 7/8
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