An equation is shown below 12 -9 + c=12 .What value of c makes the equation true?

A 0
B 3
C 9
D 12

9

Step-by-step explanation:

12-9=3 12-3=9 3+9=12

So C=9

Hey there!

12 - 9 + c = 12

Combine like terms.

3 + c = 12

Subtract 3 from each side of the equation.

3 - 3 + c = 12 - 3

c = 9

Check:

12 - 9 + c = 12

12 - 9 + 9 = 12

3 + 9 = 12

12 = 12

Hope this helps!

this is a very good question

step-by-step explanation:

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let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.