# Question #35e22

##### 2 Answers

HI,

note: '4x' changes its sign from negative to positive and also '1'

SO,

12=3x

x=4

#### Explanation:

So you have

Start by adding

Now we want to get the

Now we want to solve for

And there's your answer. You can plug it back into the original equation to check:

That's true, so your answer is correct.