The sum of 2 times a number and 4 is 8. Translate the sentence into an equation. Use the variable x for the unknown number

Question

asked May 3, 2023 34.0k views

1 Answer

Erika Sawajiri · Answer 1 · 2023-05-09T12:39:40+0000

Let:

x = Unknown number

The sum of 2 times a number and 4 can be expressed as:

Since the result is 8, the equation is given by:

Solve for x:

Subtract 4 from both sides:

$\begin{gathered} 2x+4-4=8-4 \\ 2x=4 \end{gathered}$

Divide both sides by 2:

$\begin{gathered} (2x)/(2)=(4)/(2) \\ x=2 \end{gathered}$

Answer:

x = 2