DevinEichberger587 DevinEichberger587
  • 16-07-2015
  • Mathematics
contestada

Which statement is true for the equation 2x - 2x - 7 = -7?
a. It has infinitely many solutions
b. It has two solutions
c. It has one solution
d. it has no solution

Respuesta :

naǫ
naǫ naǫ
  • 16-07-2015
[tex]2x-2x-7=-7 \\ (2-2)x-7=-7 \\ 0x-7=-7 \\ -7=-7 \\ true[/tex]

The equation is satisfied for every x, so it has infinitely many solutions.
The answer is A.
Answer Link
RenatoMattice RenatoMattice
  • 05-06-2019

Answer: Option 'a' is correct.

Step-by-step explanation:

Since we have given that

2x-2x-7=-7

We need to solve it first as follows:

[tex]2x-2x-7=-7\\\\2x-2x=-7+7\\\\0=0[/tex]

Since L.H.S. = R.H.S.

So, it satisfies the equation for all x.

So, there will be infinitely many solutions.

Hence, Option 'a' is correct.

Answer Link

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