Solve for x
x=-3
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4x+8=x-1
Use the distributive property to multiply 4 by x+2.
4x+8-x=-1
Subtract x from both sides.
3x+8=-1
Combine 4x and -x to get 3x.
3x=-1-8
Subtract 8 from both sides.
3x=-9
Subtract 8 from -1 to get -9.
x=\frac{-9}{3}
Divide both sides by 3.
x=-3
Divide -9 by 3 to get -3.
Examples
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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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