Solve for x
x=-1
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3+x-2x=4
Subtract 2x from both sides.
3-x=4
Combine x and -2x to get -x.
-x=4-3
Subtract 3 from both sides.
-x=1
Subtract 3 from 4 to get 1.
x=-1
Multiply both sides by -1.
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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