breebree834
breebree834 breebree834
  • 03-03-2022
  • Mathematics
contestada

How do you solve 2x-3y=-4 and x=7-3y by substitution?

Respuesta :

iciclepiano18
iciclepiano18 iciclepiano18
  • 03-03-2022

Answer:

[tex](1, 2)[/tex]

Step-by-step explanation:

We can solve this system using substitution.

In this case, we can substitute 7-3y for x, as they are of equal value.

Therefore...

[tex]2x-3y=-4\\2(7-3y)-3y=-4\\14-6y-3y=-4\\14-9y=-4[/tex]

Subtract 14 from both sides:

[tex]-9y=-18[/tex]

Divide both sides by -9

[tex]y=2[/tex]

Now, substitute 2 for y to solve for x:

[tex]x=7-3y=7-3(2)=7-6=1[/tex]

Therefore the solution to this system of equations is:

[tex](x, y)=(1, 2)[/tex]

Answer Link

Otras preguntas

0.008 is 1/10 of what
He Epic of Gilgamesh is one of the world's oldest pieces of literature. a. True b. False
Which of the following figures was not a major leader of a Latin American independence movement? A. Francisco de Miranda B. Ignatius of Loyola C. Father Hida
Which sentence contains a verb in the simple past tense? A. She has obeyed her father. B. She obeys her father. C. She obeyed her father. D. She had obeyed her
What number is 5% of 46?
Would you rather believe in Greek gods or Roman gods? Why?
$1080 in the ratio of 1:3:5
What features of big cities appealed to immigrants
What is fluffy in french? 30 points
Which of the following figures was not a major leader of a Latin American independence movement? A. Francisco de Miranda B. Ignatius of Loyola C. Father Hida