madelynegeck
madelynegeck madelynegeck
  • 19-02-2020
  • Mathematics
contestada

When solving for the system of linear equations by substitution what is the coordinate?
x=2y+7
3x-2y=3

Respuesta :

Yang100
Yang100 Yang100
  • 19-02-2020

Answer:

x=-2, y=-9/2. (-2, -9/2).

Step-by-step explanation:

x=2y+7

3x-2y=3

--------------

3(2y+7)-2y=3

6y+21-2y=3

6y-2y+21=3

4y+21=3

4y=3-21

4y=-18

y=-18/4

simplify

y=-9/2

x=2(-9/2)+7

x=-9+7

x=-2

Answer Link

Otras preguntas

Do you or people you know watch a lot of TV violence or play violent video games? How do you think this exposure is influencing you or them?
Please help I need answer soon. A volcanic mountain made up of volcanic ash, cinders, and bombs is called a ___________________.
Pls answer and explain
5. How does Miles spend his Christmas vacation? What does it make him realize?​
7.) What is the base of the triangle with height of 7 and area of 49?
I need the answer for 15 please.
What is the slope of a line that passes through the points (-4,0) and (0,4)?
Hurry plz 9 pounds 21 ounces = ounces
Please help me with Spanish
Which golf ball went higher, and how many feet? (Desmos!)