143k views
5 votes
Solve for x and show all your work

3x + 4 = 16

User PapaSmurf
by
7.9k points

2 Answers

3 votes

Answer:

x=4

Explanation:

16-4=12

3x=12

3*4=12

User The Hog
by
7.4k points
5 votes

Answer:
x=4

Explanation:

You need to find the value of the variable "x".

To solve for "x", the first step is to apply the Subtraction property of equality, which states that:


If\ a=b\ then\ a-c=b-c

Then, you need to subtract 4 from both sides of the equation:


3x + 4 = 16\\3x + 4-4 = 16-4\\3x=12

And finally, you can apply the Division property of equality, which states that:


If\ a=b\ then\ (a)/(c)=(b)/(c)

Then you can divide both sides of the equation by 3, getting:


(3x)/(3)=(12)/(3)\\\\x=4

User Aetherus
by
8.5k points

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