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The difference of a number and 6 is the same as 5 times the sum of the number and 2. What is the number?

A. 0
B. -2
C. -1
D. 1


Sagot :

To solve the problem, we need to translate the given statement into a mathematical equation and then solve for the unknown number.

The statement given is:
"The difference of a number and 6 is the same as 5 times the sum of the number and 2."

Let's define the unknown number as [tex]\( x \)[/tex].

1. Translate the statement into an equation:
- The difference of the number and 6 can be written as [tex]\( x - 6 \)[/tex].
- The sum of the number and 2 can be written as [tex]\( x + 2 \)[/tex].
- 5 times the sum of the number and 2 is [tex]\( 5(x + 2) \)[/tex].

Therefore, the equation represents:
[tex]\[ x - 6 = 5(x + 2) \][/tex]

2. Simplify the equation:
To solve for [tex]\( x \)[/tex], we need to simplify and isolate [tex]\( x \)[/tex]:
[tex]\[ x - 6 = 5(x + 2) \][/tex]

3. Distribute the 5 on the right side:
[tex]\[ x - 6 = 5x + 10 \][/tex]

4. Move all terms involving [tex]\( x \)[/tex] to one side:
[tex]\[ x - 5x = 10 + 6 \][/tex]

5. Simplify the equation:
[tex]\[ -4x = 16 \][/tex]

6. Solve for [tex]\( x \)[/tex]:
[tex]\[ x = \frac{16}{-4} \][/tex]
[tex]\[ x = -4 \][/tex]

So, the number that satisfies the given condition is [tex]\(-4\)[/tex].

Therefore, the correct answer is:
[tex]\[ \boxed{-4} \][/tex]