How do you solve 3x + 16= x?

3 Answers
Apr 15, 2018

x=-8

Explanation:

We can begin by subtracting 3x from both sides. Here, we want to get x on one side, and it'll be easier to get it on the right hand side. We get:

16=-2x

We can divide both sides by -2 to get:

x=-8

Apr 15, 2018

x=-8

Explanation:

Okay, so what you do here is isolate the variable, x. That would make the equation,

-2x=16

Now, divide both sides by -2 and you'll get your answer.

x=-8

Apr 15, 2018

x=-8

Explanation:

"collect terms in x on the left side and numeric values"
"on the right side of the equation"

"subtract x from both sides"

3x-x+16=cancel(x)cancel(-x)

rArr2x+16=0

"subtract 16 from both sides"

2xcancel(+16)cancel(-16)=0-16

rArr2x=-16

"divide both sides by 2"

(cancel(2) x)/cancel(2)=(-16)/2

rArrx=-8

color(blue)"As a check"

Substitute this value into the equation and if both sides are equal then it is the solution.

(3xx-8)+16=-24+16=-8=" right side"

rArrx=-8" is the solution"