Solve for x
x = \frac{64}{7} = 9\frac{1}{7} \approx 9.142857143
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64-4x=3x
Use the distributive property to multiply 4 by 16-x.
64-4x-3x=0
Subtract 3x from both sides.
64-7x=0
Combine -4x and -3x to get -7x.
-7x=-64
Subtract 64 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-64}{-7}
Divide both sides by -7.
x=\frac{64}{7}
Fraction \frac{-64}{-7} can be simplified to \frac{64}{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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