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

Can someone plz help me? :)
what gland is essential to the menstrual and ovarian cycles
As Ruth Ann is researching careers, she decides she enjoys living in her hometown and doesn’t want to relocate. Which factor might have a strong impact on her c
What does 'we are all Treaty people' mean?
Karen and Al obtained a 30-year fixed-rate, fully amortized loan when they purchased their home. Which statement is true
I need help please someone
The circumference of a woman’s basketball must be between 28.5 in. and 29 in., inclusive. What is a compound inequality that could show this?
HISTORY OF BASKETBALL.HISTORY OF BASEBALL.SIMILARITIES.​
Help me with this radius and area work
I need help with this math question because its due tomorrow