Add 18/63 and 42/49
18/63 + 42/49 is 8/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 49 is 441
Next, find the equivalent fraction of both fractional numbers with denominator 441 - For the 1st fraction, since 63 × 7 = 441,
18/63 = 18 × 7/63 × 7 = 126/441 - Likewise, for the 2nd fraction, since 49 × 9 = 441,
42/49 = 42 × 9/49 × 9 = 378/441 - Add the two like fractions:
126/441 + 378/441 = 126 + 378/441 = 504/441 - 504/441 simplified gives 8/7
- So, 18/63 + 42/49 = 8/7
In mixed form: 11/7
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