Solve for x
x=3
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1-2x+8=3
Use the distributive property to multiply -2 by x-4.
9-2x=3
Add 1 and 8 to get 9.
-2x=3-9
Subtract 9 from both sides.
-2x=-6
Subtract 9 from 3 to get -6.
x=\frac{-6}{-2}
Divide both sides by -2.
x=3
Divide -6 by -2 to get 3.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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