nataliasa346 nataliasa346
  • 24-03-2020
  • Mathematics
contestada

5x+8-7x=-4x+1
A.No Solutions
B. Exactly one solution
C. Infinitely many solutions

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 24-03-2020

Answer:

  B.  Exactly one solution

Step-by-step explanation:

You can add (4x -8) to both sides:

  5x +8 -7x +(4x -8) = -4x +1 +(4x -8)

Collect terms

  2x = -7

  x = -7/2 . . . . . divide by 2. One solution.

_____

As soon as you determine that the x-coefficients on the left and right are different, you know there is exactly one solution.

On the left, the coefficient of x is 5-7 = -2; on the right it is -4.

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