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vredina [299]
3 years ago
5

Please help 5x + 4 = 19 What is x?

Mathematics
2 answers:
notka56 [123]3 years ago
7 0
If you switch it around, it becomes 19 - 4 = 5x

19 - 4 = 15

15 ÷ 5 = 3

x = 3

Hope this helped☺☺
snow_lady [41]3 years ago
7 0
Hello, there!

5x + 4 = 19

Answer: 3
-------------------------------------------------------------------------------------------------------

Explanation:


To solve this, we will do the following:

We want to isolate the x. This means that we want x to be on one side by itself

To do this, we will subtract 4 from each side to keep 5x by itself on the left side. We must subtract 4 from each side because whatever you do to one side, you must do to the other side. This way, the value of the equation will still stay the same.

5x + 4 = 19
      -4      -4

5x = 15

We now have 5x = 15

Now, we want to simplify this wequation. 

What is the greatest common actor of 5x and 15? 

The GCF of 5x and 15 is 5

So, we must divide each side by 5 to get our final answer

 \frac{5x}{5} =   \frac{15}{5}

x = 3

So, our final answer is x = 3


I hope I helped!

Let me know if you need anything else!

~ Zoe
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