Respuesta :

Answer:

2x-3=-21.

2x=-21+3.

2x=-18.

x=-18/2.

x= -9.

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Answer:

[tex]\Huge \boxed{2x-3=-21}[/tex]

Step-by-step explanation:

Let the number be x.

The difference of two values is the result from subtracting them.

[tex]2x-3=-21[/tex]

Add 3 to both sides.

[tex]2x=-18[/tex]

Divide both sides by 2.

[tex]x=-9[/tex]

The number is -9.

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