Question

Kayla is sending invitations to 20 of her friends for a pizza party. If there are 12 invitations left to send out, how many invitations has she already mailed?
°A). X-8=20
°B). X+20=12
°C). X+8=12
°D). X+12=20

Answer 1

THE Invitations

A)×-8=20

Answer 2

Invitations Kayla has already mailed is Option (D) X + 12 = 20

Concept of statement variable equation problem -

In statement variable equation problem, a problem statement is given depicting all the necessary required parameters present there to define an equation. An unknown variable is also present in the equation which we have to define and frame the parameterized equation for solving that unknown variable.  

How to frame the given statement variable equation in the problem ?

Let the number of invitations she already mailed be X

Total number of Invitations given is 20 . Also given the invitations that are left to send out is 12.

If we add the invitations that are sent and the invitations that are left to sent out then we will get the total number of invitations.

Using this information to frame the equation, we get

X + 12 = 20 , Option(D)

To learn more about  statement variable equation, refer -

https://brainly.com/question/11918213

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