mkwesterfeld mkwesterfeld
  • 25-09-2020
  • Mathematics
contestada

Use the model to solve for x. A) x = 1 B) x = 3 C) x = 5 D) x =

Use the model to solve for x A x 1 B x 3 C x 5 D x class=

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unicorn3125
unicorn3125 unicorn3125
  • 25-09-2020

Answer:

           D){?}    x = 7

Step-by-step explanation:

x + 3•(+1) = 2•x + 4•(-1)

x + 3  =  2x - 4

  -3         -3

 x  =  2x - 7

-2x      -2x

- x  =  -7

÷(-1)     ÷(-1)

  x = 7

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