solve for x
-6x=-78
x=13
x=-72
x=84
x=-13
The correct answer is x = 13.
To solve for x, we need to isolate the variable x on one side of the equation. Here's how you can do it step-by-step:
Start with the equation: -6x = -78
Step 1: Divide both sides of the equation by -6 to isolate the variable x.
(-6x) / -6 = (-78) / -6
This simplifies to:
x = 13
Therefore, x = 13 is the correct solution.
To solve the equation -6x = -78 for x, you need to isolate the variable x by performing the same operation on both sides of the equation to maintain equality.
Step 1: Start with the given equation: -6x = -78.
Step 2: Divide both sides of the equation by -6. This will eliminate the coefficient on x.
-6x / -6 = -78 / -6.
This simplifies to:
x = 13.
Therefore, the solution to the equation -6x = -78 is x = 13.
The other options you provided, x = -72, x = 84, and x = -13, are not solutions to the given equation. Only x = 13 satisfies the equation -6x = -78.