can some one show me how to do this problem

negative four times the sum of n and seven is equal to negative five times n minus nine

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- Apr 16th 2006, 11:40 PMjim1174help
can some one show me how to do this problem

negative four times the sum of n and seven is equal to negative five times n minus nine - Apr 17th 2006, 01:09 AMCaptainBlackQuote:

Originally Posted by**jim1174**

Multiply both sides of the equation by , and as

a "-" times a "-" is a "+" this gives:

Now expand the brackets on the Right Hand Side of the equation:

Add 45/4 to both sides of the equation:

.

Subtract from both sides:

.

Finlay multiply both sides by 4:

,

so

RonL