If 2x=−4 , then what is the value of 8x ?
If 2x = -4, then dividing both sides of the equation by 2 gives x = -2.
Therefore, substituting the value of x into the expression 8x, we get 8(-2) = -16.
So, the value of 8x is -16.
To find the value of 8x, we need to solve for the value of x first.
Given that 2x = -4, we can divide both sides of the equation by 2 to isolate x:
2x/2 = -4/2
x = -2
Now that we know the value of x is -2, we can substitute it into the expression 8x to find the value:
8x = 8 * (-2)
8x = -16
Therefore, the value of 8x is -16.
To find the value of 8x, we will first solve the equation 2x = -4.
Given that 2x = -4, we need to isolate the variable x.
Step 1: Divide both sides of the equation by 2 to isolate x.
2x/2 = -4/2
x = -2
Therefore, x = -2.
Now that we know the value of x, we can substitute it into the expression 8x to find its value.
Step 2: Substitute x = -2 into 8x.
8(-2) = -16
Hence, the value of 8x is -16.