Add 40/84 and 45/63
40/84 + 45/63 is 25/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
40/84 = 40 × 3/84 × 3 = 120/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
45/63 = 45 × 4/63 × 4 = 180/252 - Add the two like fractions:
120/252 + 180/252 = 120 + 180/252 = 300/252 - 300/252 simplified gives 25/21
- So, 40/84 + 45/63 = 25/21
In mixed form: 14/21
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