I'm having major problems trying to evaluate this:

If 2x -3 =7, evaluate 3x + 4.

Jodie :confused:

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- April 18th 2005, 05:06 PMjodiet50Equations
I'm having major problems trying to evaluate this:

If 2x -3 =7, evaluate 3x + 4.

Jodie :confused: - April 18th 2005, 06:18 PMNicolQuote:

Originally Posted by**jodiet50**

1) move the -3 to the other side of the equation:

2x = 7 +3 => 2x =10

2) Solve for x by dividing both sides of the equation by 2

x = 5

Now tha you know that x=5 you can plug it into the second equation:

3x+4 => 3(5) +4 => 15 +4 => 19

Hope this helps - April 18th 2005, 06:46 PMjodiet50Equations
Thank you so much Nicole.

jodie ;)