Question

-3n-5n+9=2n+10 for what value of n is the equation true

Answer 1

If the value of n equals
`-(1)/(10)`, then the given equation would be true.

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Isolate the variable by dividing each side by factors that do not contain the variable. This being said and dealt with, n =
`-(1)/(10)`

Now, in order to determine if the value of n truly does make the equation true, we put
`-(1)/(10)` in replacement of the n values of the equation. In this situation, the left side 9.8 is equal to the right side 9.8 after
`-(1)/(10)` is inserted. This means that the given statement is always true with
`n = -(1)/(10)`.

Hope this helps!