Add 28/84 and 40/72
28/84 + 40/72 is 8/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 84 × 6 = 504,
28/84 = 28 × 6/84 × 6 = 168/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
40/72 = 40 × 7/72 × 7 = 280/504 - Add the two like fractions:
168/504 + 280/504 = 168 + 280/504 = 448/504 - 448/504 simplified gives 8/9
- So, 28/84 + 40/72 = 8/9
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