Solve the equation 3x + 5 = 17

Answer 1

In order to solve the equation 3x + 5 = 17, you need to solve for x.

1 Subtract 5 from both sides because anything you do to the left side of an equation, you must also do to the right side of the equation.

3x + 5-5 = 17-5

2 This leaves you with just the 3x on the left and the number 12 on the right.

3x = 12

3 Next you must divide both sides by 3 in order to get x by itself.

3x/3 = 12/3

4 After dividing, you are left with x on the left and 4 on the right.

x=4

Therefore to solve the equation 3x + 5 = 17, replace x with 4.

To double-check your answer, you can work the problem all the way out like so:

You need to multiply 3 and 4 together after replacing x with 4.

3(4) + 5=17

This will give you 12, when you add 5 you should get 17, proving that x=4 is the correct answer.

12 + 5=17

Answer 2

3x + 5 = 17

subtract 5 from both sides

3x +5-5 = 17-5

3x + 0 = 12

3x = 12

divide both sides by 3

3x/3 = 12/3

x = 4

to check your answer:

3(4) + 5 = 17

12 + 5 = 17

17 = 17

our answer is correct!