Solve for n
n=-1
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-n-13=3n-9
Subtract 5 from -4 to get -9.
-n-13-3n=-9
Subtract 3n from both sides.
-n-3n=-9+13
Add 13 to both sides.
-n-3n=4
Add -9 and 13 to get 4.
-4n=4
Combine -n and -3n to get -4n.
n=\frac{4}{-4}
Divide both sides by -4.
n=-1
Divide 4 by -4 to get -1.
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
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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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