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

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

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