AlayahL68779 AlayahL68779
  • 03-11-2022
  • Mathematics
contestada

Solve:y = 3xx = -2y + 70

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VanellyW278706 VanellyW278706
  • 03-11-2022

Equation1: y = 3x

Equation 2: x = -2y + 70

To solve this system, we will use the value of x of the second equation into the fist equation:

y = 3x = 3(-2y + 70) = -6y + 210

y = -6y + 210

y + 6y = 210

7y = 210

y = 210/7 = 30

y = 30

Now, we will tusethe value of y into the second equation to find the value of x:

x = -2y + 70 = -2(30)+80 = -60 + 70 = 10

x = 10

Answer:

x = 10

y = 30

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