Solve for x
x = \frac{5}{2} = 2\frac{1}{2} = 2.5
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9x-2x-16=5x-11
Use the distributive property to multiply -2 by x+8.
7x-16=5x-11
Combine 9x and -2x to get 7x.
7x-16-5x=-11
Subtract 5x from both sides.
2x-16=-11
Combine 7x and -5x to get 2x.
2x=-11+16
Add 16 to both sides.
2x=5
Add -11 and 16 to get 5.
x=\frac{5}{2}
Divide both sides by 2.
Examples
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y = 3x + 4
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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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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