Add 18/40 and 15/63
18/40 + 15/63 is 289/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 63 is 2520
Next, find the equivalent fraction of both fractional numbers with denominator 2520 - For the 1st fraction, since 40 × 63 = 2520,
18/40 = 18 × 63/40 × 63 = 1134/2520 - Likewise, for the 2nd fraction, since 63 × 40 = 2520,
15/63 = 15 × 40/63 × 40 = 600/2520 - Add the two like fractions:
1134/2520 + 600/2520 = 1134 + 600/2520 = 1734/2520 - 1734/2520 simplified gives 289/420
- So, 18/40 + 15/63 = 289/420
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