lyraduncan2001
lyraduncan2001 lyraduncan2001
  • 08-01-2016
  • Mathematics
contestada

What is the solution to the system of equations?

x+y=5
x-2y=2

(_,_)

Respuesta :

pingwin09
pingwin09 pingwin09
  • 08-01-2016
You can use the substitution method. Using the first equation in terms of y,
y = 5 - x
Substitute this to the second equation to get the value of x.
x - 2(5 - x) = 2
x - 10 + 2x = 2
3x = 2 + 10
3x = 12
x = 4

For y, just substitute the value of x that we have used in the first equation.
y = 5 - 4 = 1

Therefore, in coordinate form, that is (4,1)
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