Answer:
x=9
Step-by-step explanation:
5x+12=3+6x
Subtract 5x on both sides to get the variable on the same side of the equation
12=3+x
Subtract 3 on both sides to isolate the variable
9=x
We can subtract 5x from both sides of the equation.
-5x -5x
We get 12=3+x
We can subtract 3 from both sides.
-3 -3
We get 9=x or x=9.
D
-2 is the y intercept of the first system
