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beks73 [17]
3 years ago
10

2r-7=-1. Help please thanks

Mathematics
1 answer:
UkoKoshka [18]3 years ago
6 0

Answer:

-3

Step-by-step explanation:

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Read 2 more answers
How many solutions does the system have?<br> y = -3x +9<br> 3y = -9x + 9
Trava [24]

Answer:

{y,x} = {0,1}

Step-by-step explanation:

// Solve equation [1] for the variable  y

 [1]    y = 3x - 3

// Plug this in for variable  y  in equation [2]

  [2]    -3•(3x-3) - 9x = -9

  [2]     - 18x = -18

// Solve equation [2] for the variable  x

  [2]    18x = 18

  [2]    x = 1

// By now we know this much :

   y = 3x-3

   x = 1

// Use the  x  value to solve for  y

   y = 3(1)-3 = 0

8 0
3 years ago
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