Will give brainleist need to turn in by 9 p.m. pls hurry super easyidentify the equation that does not belong with the other three. explain your reasoning.
a. 6+x=9 b. 15=x+12 c. x+9=11 d. 7+x=10

C. x + 9 = 11

Step-by-step explanation:

We are trying to identify which of the equations does not match with the others. In this case, solve for x in each equation:

Option A):

6 + x = 9

Subtract 6 from both sides:

6 (-6) + x = 9 (-6)

x = 9 - 6

x = 3

Option B):

15 = x + 12

Subtract 12 from both sides:

15 (-12) = x + 12 (-12)

15 - 12 =  x

x = 3

Option C):

x + 9 = 11

Subtract 9 from both sides:

x + 9 (-9) = 11 (-9)

x = 11 - 9

x = 2

Option D):

7 + x = 10

Subtract 7 from both sides:

x + 7 (-7) = 10 (-7)

x = 10 - 7

x = 3

As you can tell, all the equations end with x = 3 as there answers except C. x+9=11, making (C) your answer.

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b.-18

trust me it is correct!!!

Step-by-step explanation: