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0.1x+86.424=x
Use the distributive property to multiply x+864.24 by 0.1.
0.1x+86.424-x=0
Subtract x from both sides.
-0.9x+86.424=0
Combine 0.1x and -x to get -0.9x.
-0.9x=-86.424
Subtract 86.424 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-86.424}{-0.9}
Divide both sides by -0.9.
x=\frac{-86424}{-900}
Expand \frac{-86.424}{-0.9} by multiplying both numerator and the denominator by 1000.
x=\frac{7202}{75}
Reduce the fraction \frac{-86424}{-900} to lowest terms by extracting and canceling out -12.