mstyi84
mstyi84 mstyi84
  • 14-01-2021
  • Mathematics
contestada

Solve the system of equations ​

Solve the system of equations class=

Respuesta :

Muscardinus Muscardinus
  • 19-01-2021

Answer:

x = -2 and y = -21

Step-by-step explanation:

Given equations are :

[tex]y=15x+9\ .....(1)\\\\y=\dfrac{x}{2}-20\ ....(2)[/tex]

From equation (1) and (2)

[tex]15x+9=\dfrac{x}{2}-20\\\\15x-\dfrac{x}{2}=-20-9\\\\\dfrac{29x}{2}=-29\\\\x=-2[/tex]

Put the value of x in equation (1)

y = 15(-2) + 9

= -30 + 9

y = -21

So, the solution of the equations are (-2,-21).

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