Add 42/63 and 40/84
42/63 + 40/84 is 8/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 63 × 4 = 252,
42/63 = 42 × 4/63 × 4 = 168/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
40/84 = 40 × 3/84 × 3 = 120/252 - Add the two like fractions:
168/252 + 120/252 = 168 + 120/252 = 288/252 - 288/252 simplified gives 8/7
- So, 42/63 + 40/84 = 8/7
In mixed form: 11/7
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