Solve for x
x=4
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-8-x=-3x
Combine x and -4x to get -3x.
-8-x+3x=0
Add 3x to both sides.
-8+2x=0
Combine -x and 3x to get 2x.
2x=8
Add 8 to both sides. Anything plus zero gives itself.
x=\frac{8}{2}
Divide both sides by 2.
x=4
Divide 8 by 2 to get 4.
Examples
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y = 3x + 4
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Matrix
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Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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