Posted by **carolina** on Tuesday, August 28, 2007 at 6:47pm.

how do you work this problem ????

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.

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X+(-9)=-5

- algebra -
**Ms. Sue**, Tuesday, August 28, 2007 at 6:49pm
x + (-9) = -5

x = -5 + 9

x = 4

- algebra -
**carolina**, Tuesday, August 28, 2007 at 6:50pm
but why does X = -5 +9

- algebra -
**Ms. Sue**, Tuesday, August 28, 2007 at 6:54pm
You need to get the unknown on one side of the equation and the knowns on the other side. To do that you subtract -9 from the left side, change the sign and add it to the right side.

- algebra -
**carolina**, Tuesday, August 28, 2007 at 7:29pm
i still don't get it

- algebra -
**carolina**, Tuesday, August 28, 2007 at 7:24pm
ii still don't get it

- algebra -
**DrBob222**, Tuesday, August 28, 2007 at 7:48pm
** Let's try this.**

X+(-9)=-5

**Remember, you can do anything to an equation as long as you do it to both sides. We want to get X (the unknown) on one side and the numbers on the other with the = sign between.
**

So, remove the parentheses first to obtain (remember that a + sign in front of the parentheses leaves the sign of the numbers inside the parentheses unchanged--conversely, a - sign in front of the parentheses changes all the signs inside the parentheses when the parentheses are removed).

X - 9 = -5

Now add +0 to both sides.

X-9+9 = -5+9

Now combine the numbers

-9 and +9 add to zero on the left while -5 and +9 add to +4 on the right.

X = +4.

That is the way to move anything from one side to the other. If you wish to move a + number simply subtract that number from both sides; if you wish to move a - number simply add that number to both sides. An easier way is to move anything from one side to the other by moving it and changing the sign.

I hope this helps.

- algebra -
**carolina**, Tuesday, August 28, 2007 at 7:56pm
yes thanx now i get it

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