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  • 19-09-2020
  • Mathematics
contestada

Find the error and show the correct solution.
1
5x –9 = -2(x-3)
5x-9 = -2x + 5
7x = 14
x = 2

Respuesta :

ZJSG09112007
ZJSG09112007 ZJSG09112007
  • 19-09-2020

15/7

Step-by-step explanation:

The error is in :

[tex] - 2(x - 3)[/tex]

It was expanded as -2x +5 which was wrong

Correct solution

[tex]5x - 9 = - 2(x - 3) \\ 5x - 9 = - 2x + 6 \\ 5x + 2x = 6 + 9 \\ 7x = 15[/tex]

[tex] \frac{7x}{7} = \frac{15}{7} \\ \\ x = 2 \frac{1}{7} [/tex]

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