Answer:
-2
Step-by-step explanation:
We can set it equal to zero
2x+4 = 0
2x =-4
x = -2
Answer:
x = -2
Step-by-step explanation:
To solve for variables, we need the equation to be set equal to something. If no other number is given, assume zero.
2x + 4 = 0
Move 4 to the right by subtracting it from the left and right (since it is being added).
2x = -4
Next, isolate x by dividing both sides by 2 (since x is being multiplied by 2)
x = -2
We can check that this is correct by plugging in -2 for x and seeing if we get zero.
2(-2) + 4 = 0
-4 + 4 = 0
0 = 0
