Solve for n
n=-5
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\frac{1}{2}+\frac{4}{2}=-\frac{1}{2}n
Convert 2 to fraction \frac{4}{2}.
\frac{1+4}{2}=-\frac{1}{2}n
Since \frac{1}{2} and \frac{4}{2} have the same denominator, add them by adding their numerators.
\frac{5}{2}=-\frac{1}{2}n
Add 1 and 4 to get 5.
-\frac{1}{2}n=\frac{5}{2}
Swap sides so that all variable terms are on the left hand side.
n=\frac{5}{2}\left(-2\right)
Multiply both sides by -2, the reciprocal of -\frac{1}{2}.
n=\frac{5\left(-2\right)}{2}
Express \frac{5}{2}\left(-2\right) as a single fraction.
n=\frac{-10}{2}
Multiply 5 and -2 to get -10.
n=-5
Divide -10 by 2 to get -5.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}