Solve for x
x=2
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x+16=9x
Multiply both sides of the equation by 3.
x+16-9x=0
Subtract 9x from both sides.
-8x+16=0
Combine x and -9x to get -8x.
-8x=-16
Subtract 16 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-16}{-8}
Divide both sides by -8.
x=2
Divide -16 by -8 to get 2.
Examples
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Linear equation
y = 3x + 4
Arithmetic
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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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