Question

Given the equation 3x + 1 = 16, solve for x

Answer 1

Answer:

$x=5$

Step-by-step explanation:

We have the following expression:

$3x+1=16$

and we need to solve for $x$, so the first thing we have to do (in order to leave the x alone on one side of the equation) is move the +1 to the left sife with the opposite sign (-1):

$3x=16-1\\3x=15$

now we divide each side by 3, and we get:

$\frac{3x}{3}=\frac{15}{3} \\x=5$

the answer is $x=5$

Answer 2

Answer:

x = 5

Step-by-step explanation:

3x + 1 = 16

Subtracting 1 on both sides of the equation,

3x + 1 – 1 = 16 – 1

Summing algebraically (in this case subtracting by having different signs) on both sides,

3x = 15

Isolating x by dividing both sides by 3

3x / 3 = 15 / 3

Dividing,

x = 5