Respuesta :
Answer:
[tex](5,2)[/tex]
Step-by-step explanation:
[tex]2x-2y=6\\4x+4y=28[/tex]
Column 1 :
[tex]2x-2y=6..........(1)\\4x+4y=28........(2)[/tex]
Column 2 :
Eqn(1) [tex]\times\ 2[/tex]
[tex]4x-4y=12\\4x+4y=28[/tex]
Column 3 :
Add the equations.
[tex](4x+4x)-4y+4y=12+28\\8x=40[/tex]
Fourth column :
[tex]8x=40\\x=\frac{40}{8}=5[/tex]
Fift column :
[tex]4x+4y=28\\8x=40[/tex]
Sixth column :
Substitute [tex]x=5[/tex].
[tex]4\times 5+4y=28\\4y=28-20\\4y=8\\y=2[/tex]
Hence solution is [tex](5,2)[/tex].
Answer:
I'm terrible at explaining so here's a screenshot
- Ripper
Step-by-step explanation:
