Add 40/84 and 15/45
40/84 + 15/45 is 17/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 84 × 15 = 1260,
40/84 = 40 × 15/84 × 15 = 600/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
15/45 = 15 × 28/45 × 28 = 420/1260 - Add the two like fractions:
600/1260 + 420/1260 = 600 + 420/1260 = 1020/1260 - 1020/1260 simplified gives 17/21
- So, 40/84 + 15/45 = 17/21
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