Equivalent expressions are expressions that have the same value.
The equivalent expression of is:
The expression is given as;
Apply law of indices to change the exponents
Express as products
Rewrite as
Hence, the equivalent expression is:
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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"
The next day his dog ate half of his collection.
There are now only 38 cards left.
Multiplying both sides by 2
Subtracting 7 from both sides
Hence,
Dan started with 69 cards
Keywords: Linear equation, word problems
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