miyempress1685
miyempress1685 miyempress1685
  • 02-10-2019
  • Mathematics
contestada

Solve: 9x-18=3(3x-2)-12​

Respuesta :

gmany
gmany gmany
  • 01-01-2020

Answer:

Solution: any number (x ∈ R)

Step-by-step explanation:

[tex]9x-18=3(3x-2)-12\qquad\text{use the distributive property}\\\\9x-18=(3)(3x)+(3)(-2)-12\\\\9x-18=9x-6-12\qquad\text{subtract}\ 9x\ \text{from both sides}\\\\9x-9x-18=9x-9x-18\\\\-18=-18\qquad\bold{TRUE}[/tex]

We received a true equation without the variable x.

Conclusion:

The equation is identity. Each number satisfies this equation.

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