Solve for n
n=4
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3n-n+3n=20
Combine 9n and -6n to get 3n.
2n+3n=20
Combine 3n and -n to get 2n.
5n=20
Combine 2n and 3n to get 5n.
n=\frac{20}{5}
Divide both sides by 5.
n=4
Divide 20 by 5 to get 4.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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