Question

Solve for x: x + 3x - 19 = 17

Answer 1

Answer:

$\boxed{\boxed{\sf{x=9}}}$

Solution Steps:

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1.) Combine x and 3x:

• $x+3x=4x$

 - We combine the $(x)$ variables because to get to the end sum of the equation, there can only be 1 variable. So to get the 1, you combine like terms.

2.) Add 19 to both sides:

• $-19+19=$ Cancels Out

• $17+19=36$

 - We do this to get 1 number left over. To do this you do the opposite of what you see. In this case we have a negative 19, so you add 19 on each side of the equals.

3.) Divide both sides by 4:

• $4x$ ÷ $4=x$

• $36$ ÷ $4=9$

 - We do this to get x alone. To do this you do the opposite of what you see. In this case we have $4(x)$ which is multiplying, so you divide by 4 on each side.

So your answer is $\bold{x=9}$.

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