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NNADVOKAT [17]
3 years ago
10

A student bought a book for $7 and a pen. The total cost was $9. Which of the following equations can be used to find the cost o

f the pen?
Mathematics
2 answers:
Fynjy0 [20]3 years ago
4 0

Answer:

7+x=9

Step-by-step explanation:

if you subtract 7 from both sides of this you will get x=2 so the pen is $2

anygoal [31]3 years ago
3 0
<h2>Solution :</h2>

Total cost = $9

Cost of book = $7

Let the cost of pen be = x

Thus,

x+$7=$9

x=$9-$7

x=$2

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