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4 votes
|x| + 4 > 7 plz help and hurry

1 Answer

4 votes

Answer:

The solution is
(-\infty,-3)\cup(3,\infty).

Explanation:

Given:

The inequality given is:


|x|+4>7

In order to simplify for 'x', we first isolate 'x' on one side.

Adding -4 on both sides, we get:


|x|+4-4>7-4\\\\|x|>3

Now,
|x| is an absolute value function which is defined as:


|x|=\left \{ {{-x}\ \ x<0 \atop {x\ \ x\geq0}} \right.

Therefore, the given inequality can be rewritten as:


-x > 3\\x<-3 and
x > 3

Therefore, the solution is
(-\infty,-3)\cup(3,\infty).

User Harriette
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