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Oksi-84 [34.3K]
3 years ago
6

0 ) Dan bought 7 new baseball trading cards to add to his collection. The next

Mathematics
1 answer:
harina [27]3 years ago
4 0

Dan started with 69 cards

Step-by-step explanation:

Let x be the initial number of cards

Then

According to "Dan bought 7 new baseball trading cards to add to his collection"

x+7

The next  day his dog ate half of his collection.

\frac{1}{2}(x+7)

There are now only 38 cards left.

\frac{1}{2} (x+7) = 38

Multiplying both sides by 2

x+ 7 = 38*2\\x+7 = 76

Subtracting 7 from both sides

x+7-7 = 76-7\\x = 69

Hence,

Dan started with 69 cards

Keywords: Linear equation, word problems

Learn more about linear equations at:

  • brainly.com/question/7888686
  • brainly.com/question/7857079

#LearnwithBrainly

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