Question

Is x = -4 a valid solution this linear equation?

2x + 9(x - 1) = 8(2x + 2) - 5
No. When -4 is substituted for the variable, the result is a true statement
No. When -4 is substituted for the variable, the result is a false statement
Yes When -4 is substituted for the variable, the result is a true statement
Yes When -4 is substituted for the variable, the result is a false statement
Done

Answer 1

Yes, -4 is valid.

Explanation:

Lets Find out.

So, using substitution:

`2(-4)+9(-4-1)=8(2(-4)+2)-5\\-8-45=8(-6)-5\\-53=-48-5\\-53=-53`

Yes, -4 is a valid solution.

Hope This Helps!

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Answer 2

Yes. When –4 is substituted for the variable, the result is a true statement.

Explanation: