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PLEASE HELP!!!!

Select all the equations that could replace one of the equations in the following system without changing its solution.

−8x −6y = 10
x + 7y = 9

Select one or more:
A. -2x + 7y = 9
B. 4x + 3y = -5
C. 24x + 18y = 10
D. -16x - 12y = 20
E. 3x + 21y = 27
F. x - 14y = -18

Respuesta :

znk

Answer:

B, D, E  

Step-by-step explanation:

-8x  -  6y = 10

  x + 7y =    9

You can multiply any of these equations by a constant without changing the solution.

B. 4x + 3y = -10 is equivalent to multiplying each side of the first equation by -½.

D. -16x - 12y = 20 is equivalent to multiplying each side of the first equation by 2.

E. 3x + 21y = 27 is equivalent to multiplying each side of the second equation by 3.

A. -2x + 7y = 9 is wrong. The signs don't match those of the second equation.

C. 24x + 18y = 10 is wrong. The signs don't match those of the first equation.

F. x - 14y = -18 is wrong. The coefficient of x should be -2.

mandycastellano

Answer:

B, D, and E

Step-by-step explanation:

i got it right

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