romerolilg2000 romerolilg2000
  • 26-02-2019
  • Mathematics
contestada

Given the system of equations,
x + 2y = 7
x - 2y = -1
What is the solution?
{(-8, -12)}
or
{(3, 2)}
or
{(-4, 6)}

Respuesta :

gmany
gmany gmany
  • 28-02-2019

Answer:

(3, 2)

Step-by-step explanation:

[tex]\underline{+\left\{\begin{array}{ccc}x+2y=7\\x-2y=-1\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad2x=6\qquad\text{divide both sides by 2}\\.\qquad\qquad\boxed{x=3}\\\\\\\text{Put the value of x to the first equation:}\\\\3+2y=7\qquad\text{subtract 3 from both sides}\\2y=4\qquad\text{divide both sides by 2}\\\boxed{y=2}[/tex]

Answer Link
jhbtvcfvbvhtrew322
jhbtvcfvbvhtrew322 jhbtvcfvbvhtrew322
  • 29-12-2020

Answer:

3,2

Step-by-step explanation:

Answer Link

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