Solve for x
x=-4
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2x+18+3x=-2
Add 3x to both sides.
5x+18=-2
Combine 2x and 3x to get 5x.
5x=-2-18
Subtract 18 from both sides.
5x=-20
Subtract 18 from -2 to get -20.
x=\frac{-20}{5}
Divide both sides by 5.
x=-4
Divide -20 by 5 to get -4.
Examples
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Linear equation
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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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