Solve for x
x=\frac{10}{11}\approx 0.909090909
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3x-9+4\left(2x+1\right)=5
Use the distributive property to multiply 3 by x-3.
3x-9+8x+4=5
Use the distributive property to multiply 4 by 2x+1.
11x-9+4=5
Combine 3x and 8x to get 11x.
11x-5=5
Add -9 and 4 to get -5.
11x=5+5
Add 5 to both sides.
11x=10
Add 5 and 5 to get 10.
x=\frac{10}{11}
Divide both sides by 11.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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