Question

GIVING MEDAL HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP for the follow system of equations, what is the x value of the solution?

-x+2y=6
6y=x+18

Answer 1

i need to know how to do this

Answer 2

we can solve this by substitution.

rearrange the top equation so it equals y.
-x+2y=6
+x-x+2y=6+x
2y = 6+x
y=6/2 + x/2
y=3 + x/2

plug this into the second equation
6y=x+18
6(3 + x/2)=x+18
18 + 6x/2 = x + 18
18 + 3x = x + 18
18 + 3x -18= x + 18 -18
3x = x
3x -x = x -x
2x = 0
x=0