Respuesta :

seashellseashell2

Answer:

the first one

Step-by-step explanation:

all they did was change it t addition which doesnt change the negative s the answer is the same

ajeigbeibraheem

The expression that is equivalent to -4-9 is -4 + (-9).

The rule of arithmetic calculations state that when calculating algebraic expression;

plus sign multiplied by plus sign will remain positive

  • i.e. (+) × (+) = +

minus sign multiplied by a minus sign will be positive

  • i.e. (-) ×  (-) = +

plus sign multiplied by a minus sign will be negative

  • i.e (+) × (-) = -

The expression given is -4 - 9 = -13

Option (a)

  • -4 + (-9)

Recall that: (+) × (-) = -

Open brackets

= -4 - 9

= - 13

Option (b)

  • 4 + 9 = 13

Option (c)

  • -4 + 9 = 5

Option (d)

  • 4 - 9 = -5

Therefore, we can conclude that the expression that is equivalent to -4-9 is -4 + (-9).

Learn more about arithmetic calculations here:

https://brainly.com/question/11764572?referrer=searchResults

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