Solve for x
x=4
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4x-12=x
Use the distributive property to multiply 4 by x-3.
4x-12-x=0
Subtract x from both sides.
3x-12=0
Combine 4x and -x to get 3x.
3x=12
Add 12 to both sides. Anything plus zero gives itself.
x=\frac{12}{3}
Divide both sides by 3.
x=4
Divide 12 by 3 to get 4.
Examples
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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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