Sunday

March 1, 2015

March 1, 2015

Posted by **SO LOST** on Sunday, February 20, 2011 at 10:48pm.

solve for x using the addition principle

x+10=-13

Now I added 10 to both sides 10 + 10 that gives me 20

then I added -13 +10 = -3

my x is the 20 or did I mess this problem up all the way around?

- math algebra -
**Ms. Sue**, Sunday, February 20, 2011 at 10:51pmYou need to subtract (not add) 10 to both sides of the equation. The purpose is to get the unknown quantity on one side and the known quantity on the other side.

x + 10 - 10 = -13 + (-10)

x = -23

- math algebra -
**kLb**, Sunday, February 20, 2011 at 10:52pmyou -10 from both sides not add

[do the opposite]

so x=-23

**Answer this Question**

**Related Questions**

Math - Could someone please help me with this math problem? Solve using the ...

Help Please - Help to solve this 1/2 (3g-2) = g/6 nevermind I was missing a ...

Algebra - Can you explain to me how to solve this equation? 2/3x-9=1/3 1/3=.33 ...

Math, rational inequalities - Please can someone help me solve this problem? 2/x...

9th grade Math - (7n-1)/(8)=6 Okay, I think I add 1 to both sides, so now I have...

math - can someone check my answer please? solve using multiplication principle...

math - solve using the addition principle. -6+x>5 I have not done one of ...

algebra - I need a step by step explanation on how to add these two equations 2x...

pre-algebra - x+5/4=3/4x The next step would be obtained by subtracting 3/4 x + ...

algebra - Q: when graphing the equation y = 4/3x + 2, the y intercept is? A: (0,...