Solve for x
x=1
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10-x-9x=0
Subtract 9x from both sides.
10-10x=0
Combine -x and -9x to get -10x.
-10x=-10
Subtract 10 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-10}{-10}
Divide both sides by -10.
x=1
Divide -10 by -10 to get 1.
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