anonymous
  • anonymous
Check answer please
Mathematics
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anonymous
  • anonymous
Check answer please
Mathematics
schrodinger
  • schrodinger
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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anonymous
  • anonymous
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anonymous
  • anonymous
jim_thompson5910
  • jim_thompson5910
you actually use the commutative property here to swap x and 4 commutative property of multiplication a*b = b*a

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jim_thompson5910
  • jim_thompson5910
it's similar to what happens in step 4 when they swapped the 1 and 7x
anonymous
  • anonymous
jim_thompson5910
  • jim_thompson5910
yes
anonymous
  • anonymous
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jim_thompson5910
  • jim_thompson5910
now associative comes into play associative property of multiplication a*(b*c) = (a*b)*c

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