Posted by Kris on Sunday, January 24, 2010 at 7:38pm.
I'll do the first one.
3x + 15 = 0
3x = -15
x = -5
I'll be glad to check your work for the second problem.
2. 6x + 18 =0
6x/6 = 18/6
x = 3??
x = -3
You're on the right track, Good job!
But you forgot to subtract 18 from the right side of the equation.
6x + 18 =0
6x/6 = -18/6
x = -3
To check it, substitute -3 for x.
6(-3) + 18 = 0
-18 + 18 = 0
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