Add 18/63 and 28/40
18/63 + 28/40 is 69/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 40 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 63 × 40 = 2520,
18/63 = 18 × 40/63 × 40 = 720/2520 - Likewise, for the 2nd fraction, since 40 × 63 = 2520,
28/40 = 28 × 63/40 × 63 = 1764/2520 - Add the two like fractions:
720/2520 + 1764/2520 = 720 + 1764/2520 = 2484/2520 - 2484/2520 simplified gives 69/70
- So, 18/63 + 28/40 = 69/70
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