Marinzu Marinzu
  • 24-02-2018
  • Mathematics
contestada

Linear Combination (Show all work and write steps.)

2x - 3y = 13

x + 2y = -4

Respuesta :

creeds25
creeds25 creeds25
  • 05-03-2018
2x-3y=13 Equation 1
x+2y=-4 Equation 2
Solving by substitution method.
Isolate x from equation 2.
x=-2y-4
Substitute value of x in equation 1.
2(-2y-4)-3y=13
-4y-8-3y=13
-7y-8=13
-7y=21
y=-3
Now substitute value of y in x=-2y-4
x=-2(-3)-4
x=6-4
x=2

Answer: (x,y)= (2,-3)
Answer Link

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