Solve for x
x=-1
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8x+4=x-3
Use the distributive property to multiply 4 by 2x+1.
8x+4-x=-3
Subtract x from both sides.
7x+4=-3
Combine 8x and -x to get 7x.
7x=-3-4
Subtract 4 from both sides.
7x=-7
Subtract 4 from -3 to get -7.
x=\frac{-7}{7}
Divide both sides by 7.
x=-1
Divide -7 by 7 to get -1.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
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699 * 533
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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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