JaneliN381985 JaneliN381985
  • 04-11-2022
  • Mathematics
contestada

what is the solution to the system of equations below 3x + 4y equals -2 2x - 4y equals -8

what is the solution to the system of equations below 3x 4y equals 2 2x 4y equals 8 class=

Respuesta :

HeshamZ498829 HeshamZ498829
  • 04-11-2022

Given data:

The first equation is 3x + 4y = -2 .

The second equation is 2x - 4y = -8.

Add both the equations.

[tex]\begin{gathered} (3x+4y)+(2x-4y)=-2+(-8) \\ 5x=-10 \\ x=-2 \end{gathered}[/tex]

Substitute -2 for x in the first equation.

[tex]\begin{gathered} 3(-2)+4y=-2 \\ -6+4y=-2 \\ 4y=4 \\ y=1 \end{gathered}[/tex]

Thus, the value of x is -2 and the value of y is 1, so (D) option is correct.

​

Answer Link

Otras preguntas

how were north american colonies all similar in the 1700s?
how were north american colonies all similar in the 1700s?
How do you?...Multiply out and simplify 10(2x-1)-20x?
How do you?...Multiply out and simplify 10(2x-1)-20x?
What are the functions of receptors in our body? Think of a situation where receptors do not work properly. What problems are likely to arise?
What are the functions of receptors in our body? Think of a situation where receptors do not work properly. What problems are likely to arise?
The function of the eardrum in the middle ear is to
What is the amplitude of y=1/2 sin2x
What are the functions of receptors in our body? Think of a situation where receptors do not work properly. What problems are likely to arise?
how were north american colonies all similar in the 1700s?