vegetap591
vegetap591 vegetap591
  • 18-07-2021
  • Mathematics
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When solving the system of equations, which expression could be substituted for r in the first equation?

3r + 2t = 15

r = 4 – t

When solving the system of equations which expression could be substituted for r in the first equation 3r 2t 15 r 4 t class=

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wegnerkolmp2741o
wegnerkolmp2741o wegnerkolmp2741o
  • 18-07-2021

Answer:

4-t

Step-by-step explanation:

We use the second equation and  r = 4-t

every time we see r in the first equation replace it with 4-t

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