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How many solutions does this system have? y=-3x -9x-4y=21

How many solutions does this system have? y=-3x -9x-4y=21
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How many solutions does this system have? y=-3x -9x-4y=21

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User Sebastian Nielsen
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1 Answer

5 votes

Explanation:

-9x-4(-3x)=21

-9x+12x=21

3x=21

x=7

answered
User Ishtar
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8.6k points
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