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Which of the following equations have no solutions? Choose all answers that apply:
(Choice A) A -40x+40=20x+20
(Choice B) B 20x+40=40x+20
(Choice C) C -20x+40=-20x+20
(Choice D) D 40x+40=40x+20

Respuesta :

nktselepov

A

[tex] - 40x + 40 = 20x + 20 \\ - 60x = - 20 \\ x = \frac{1}{3} [/tex]

This equation has a solution

B

[tex]20x + 40 = 40x + 20 \\ - 20x = - 20 \\ x = 1[/tex]

This equation has a solution

C

[tex] - 20x + 40 = - 20x + 20 \\ 0x = - 20[/tex]

This equation has no solution

D

[tex]40x + 40 = 40x + 20 \\ 0x = - 20[/tex]

This equation has no solution

Answer: C, D
answer choice a and b are incorrect . C and D are correct