SavannahGrace06
SavannahGrace06 SavannahGrace06
  • 03-01-2022
  • Mathematics
contestada

Solve system by using the substitution method.

y=2x+9
8x-3=y


( ? , )

Respuesta :

itsandypandy
itsandypandy itsandypandy
  • 03-01-2022

Answer:

[tex]x = 2; y = 13[/tex]

Step-by-step explanation:

⇒ [tex]4y = 8x + 36[/tex]   [Multiply equation 1 by 4]

⇒ [tex]3y = 39[/tex]   [Subtract equation 2 from eq 1]

*Here I do 4y - y = 3y; 8x - 8x = 0; 36 - -3 = 39.

⇒ [tex]y = 13[/tex]   [Divide both sides by 3]

⇒ [tex]13 = 2x + 9[/tex]   [Sub in y]

⇒ [tex]2x = 4[/tex]   [Subtract 9 from both sides]

⇒ [tex]x = 2[/tex]   [Divide both sides by 2]

Hope this helps! :D

Answer Link

Otras preguntas

what is the mass of one mole of caco3
A diamond with a mass of 45 g hangs motionless from a chain. what is the upward force of the chain on the diamond?
How did people most likely arrive in northern europe
how can a janitor stop bullying
Solve the inequalities, if possible, and graph. 4(4t + 2) < 2(4t + 4).
in order to get a certain shade of blue paint, a mixer must have 5 parts white paint to 3 parts blue. if 4 gallons of paint must be mixed, how many gallons of w
When a machine is used to perform a task, work output is always more than work input. please select the best answer from the choices provided t f?
which is the equivalent percent form of the fraction 3/8 ?
the stamp act was never repealed. true or false
Succession is always caused by natural events. please select the best answer from the choices provided t f