Question

Which one of these equations gives x = -3 as a solution?
(A) X-3 = 0
(C) 7 - x=4
(B) 3x + 9 = 0
(D) None of these​

Answer 1

Answer:

Question:-

which one of these equations gives x= -3 as a solution?

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Required Answer:-

Option B is correct✅️

B)3x+9=0

3x = -9

x = -9/3

x = -3

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Verification:-

Now, Lets verify our Answer

put x = -3 in equation 3x+9=0

3x+9=0

3(-3)+9=0

-9+9=0

0=0

since, L.H.S.=R.H.S.

Therefore, 3x-9=0 is the equation which get -3 as a solution

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Now, lets check what we will get if we try to find the value of x in other given equation.

A)x-3=0

x=3

C)7-x=4

7-4=x

x=3

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Hope it help you :)