Solve for x
x=-2
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4-\left(-6x\right)+8=0
Multiply 3 and -2 to get -6.
4+6x+8=0
The opposite of -6x is 6x.
12+6x=0
Add 4 and 8 to get 12.
6x=-12
Subtract 12 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-12}{6}
Divide both sides by 6.
x=-2
Divide -12 by 6 to get -2.
Examples
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Linear equation
y = 3x + 4
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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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