Solve for x
x=10
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20-2x=0
Swap sides so that all variable terms are on the left hand side.
-2x=-20
Subtract 20 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-20}{-2}
Divide both sides by -2.
x=10
Divide -20 by -2 to get 10.
Examples
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Matrix
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Simultaneous equation
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Limits
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