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March 26, 2015

March 26, 2015

Posted by **kim** on Sunday, November 4, 2007 at 9:58am.

5x+5-=0

Thanks for the help!!1

- math.algebra -
**Tommy**, Sunday, November 4, 2007 at 10:16am5x + 5 = 0

*Subtract 5 from both sides*

5x = -5

*Divide by 5 from both sides to isolate your variable x*

x = -1

- math.algebra -
**drwls**, Sunday, November 4, 2007 at 10:16amWhat does 5x mean, and why is there a - sign before the = sign?

- math.algebra -
**kim**, Sunday, November 4, 2007 at 10:25amI'm sorry, its suppose to be square root 5x+5-5=0

- math.algebra -
**drwls**, Sunday, November 4, 2007 at 11:40amIf you mean sqrt(5x) + 5 - 5 =0,

the +5 -5 cancels out and you get

sqrt x = 0 and x = 0.

If you mean sqrt(5x+5) -5 = 0, then rewrite it as

sqrt(5x+5) = 5

Now square both sides:

5x+5 = 35

5x = 20

x = 4

Proper use of parentheses is important.

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