SOLUTION: X - 10%=180 THIS IS AN EXAMPLE. TOTAL PRICE MINUS 10% EQUALS 180.HOW DO YOU FIND OUT THE START NUMBER AND HOW MUCH THE 10% IS?

Question 171505: X - 10%=180
THIS IS AN EXAMPLE. TOTAL PRICE MINUS 10% EQUALS 180.HOW DO YOU FIND OUT THE START NUMBER AND HOW MUCH THE 10% IS?
Found 2 solutions by stanbon, solver91311:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
X - 10%=180
THIS IS AN EXAMPLE. TOTAL PRICE MINUS 10% EQUALS 180.HOW DO YOU FIND OUT THE START NUMBER AND HOW MUCH THE 10% IS?
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If X is the total price and you are subtracting 10% of x
your equation should be
x - 0.10x = 180
0.90x = 180
x = 200
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Cheers,
Stan H.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
First thing: Please stop posting in all CAPS. It is the electronic equivalent of shouting and therefore rude, insensitive, and annoying.

Your equation is actually missing an element. One could reasonably ask "10% of what?" because it isn't specified. In practical terms, I would just assume that you mean some value x minus 10% of that same value x is equal to 180 -- symbolically speaking:

Now your problem is a simple matter of combining like terms and then dividing by the coefficient on x:

(because )

Hope that helps
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