How do you solve #2x - 4 = -4#?

Answer 1

#x=0#
Look at the method. It will help you solve other problems.

Given: #2x-4=-4#
The objective is to get #x# on its own.
#color(blue)("Step 1")# Isolate the x-terms

To both sides, add four.

#( 2x-4) color(brown)(+4) = (-4) color(brown)(+4)#

The brackets have no other function than to indicate the portion of the preceding equation that will be altered.

#2x +color(brown) ((-4+4)) = color(brown)((-4+4)) #
#2x +0 = 0#
#color(blue)("Step 2")#

Split each side in half.

#(2x)/(color(brown)(2)) =0/(color(brown)(2)#
#2/(color(brown)(2))x = 0#
#color(green)("But "2/2" is another way of writing "1#
#1 times x = 0#
#x=0#
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Answer 2

To solve the equation 2x - 4 = -4, you add 4 to both sides to isolate the variable, which gives you 2x = 0. Then, you divide both sides by 2, and you get x = 0. Therefore, the solution to the equation is x = 0.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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