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For what value of b would the following system of equations have an infinite number of solutions? 9x+12y=21 6x+8y=7b

For what value of b would the following system of equations have an infinite number of solutions? 9x+12y=21 6x+8y=7b
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For what value of b would the following system of equations have an infinite number of solutions?

9x+12y=21
6x+8y=7b

asked
User Str
by
7.5k points

1 Answer

4 votes

Answer:

9/6 = 3/2, so 21/(7b) = 3/b = 3/2.

b = 2

answered
User Sergey Sosunov
by
8.1k points
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