Solve for x
x=3
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-2x+15=9
Square both sides of the equation.
-2x+15-15=9-15
Subtract 15 from both sides of the equation.
-2x=9-15
Subtracting 15 from itself leaves 0.
-2x=-6
Subtract 15 from 9.
\frac{-2x}{-2}=-\frac{6}{-2}
Divide both sides by -2.
x=-\frac{6}{-2}
Dividing by -2 undoes the multiplication by -2.
x=3
Divide -6 by -2.
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Matrix
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Limits
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