Solve for x
x=-3
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4x=-18+6
Add 6 to both sides.
4x=-12
Add -18 and 6 to get -12.
x=\frac{-12}{4}
Divide both sides by 4.
x=-3
Divide -12 by 4 to get -3.
Examples
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y = 3x + 4
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Matrix
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Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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Limits
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