Solve for x
x = \frac{12}{7} = 1\frac{5}{7} \approx 1.714285714
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12-6x=x
Use the distributive property to multiply 6-3x by 2.
12-6x-x=0
Subtract x from both sides.
12-7x=0
Combine -6x and -x to get -7x.
-7x=-12
Subtract 12 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-12}{-7}
Divide both sides by -7.
x=\frac{12}{7}
Fraction \frac{-12}{-7} can be simplified to \frac{12}{7} by removing the negative sign from both the numerator and the denominator.
Examples
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Linear equation
y = 3x + 4
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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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