Solve for x
x=-2
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8x+8-4x=0
Subtract 4x from both sides.
4x+8=0
Combine 8x and -4x to get 4x.
4x=-8
Subtract 8 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-8}{4}
Divide both sides by 4.
x=-2
Divide -8 by 4 to get -2.
Examples
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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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