Solve for x
x = -\frac{21}{10} = -2\frac{1}{10} = -2.1
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10x=-21
Subtract 21 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-21}{10}
Divide both sides by 10.
x=-\frac{21}{10}
Fraction \frac{-21}{10} can be rewritten as -\frac{21}{10} by extracting the negative sign.
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