Respuesta :

The required number is -3. The expression for the given condition is

4x + 8 = -4.

How to write a word problem as an expression or equation?

Writing a word problem into an equation/expression:

  • Observe the given word problem for any variable terms
  • Assign a variable for such terms
  • Observe for operators like more, less, after, or before
  • Choose the appropriate operator for them
  • Equate the obtained terms to the given value (if any) or simply leave it as an expression.

Calculation:

It is given that,

Four times a number added to eight is equivalent to the opposite of four.

So, consider the required number as variable 'x'

Then we can write the expression as,

4x + 8 = -4 (since opposite of four is nothing but negative four)

Thus, on simplifying,

4x = -4 - 8

⇒ 4x = -12

⇒ x = -12/4

∴ x = -3

So, the required number is -3.

We can also check this by adding -3 four times to 8;

⇒ 8 - 3 - 3 - 3 - 3

⇒ -4

Learn more about the expression here:

https://brainly.com/question/1563087

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