Solve for x
x=3
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-100x+900-300x=-300
Subtract 300x from both sides.
-400x+900=-300
Combine -100x and -300x to get -400x.
-400x=-300-900
Subtract 900 from both sides.
-400x=-1200
Subtract 900 from -300 to get -1200.
x=\frac{-1200}{-400}
Divide both sides by -400.
x=3
Divide -1200 by -400 to get 3.
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