.07*(10000-x)=900

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Solution for .07*(10000-x)=900 equation:


.07*(10000-x)=900

We simplify the equation to the form, which is simple to understand 
.07*(10000-x)=900

Reorder the terms in parentheses
+(+700-0.07x)=900

Remove unnecessary parentheses
+700-0.07x=+900

We move all terms containing x to the left and all other terms to the right. 
-0.07x=+900-700

We simplify left and right side of the equation. 
-0.07x=+200

We divide both sides of the equation by -0.07 to get x. 
x=-2857.14285714

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