- 1 = \frac { a } { ( 4 - 1 ) ( 4 - 5 }
Solve for a
a=3
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-1=\frac{a}{3\left(4-5\right)}
Subtract 1 from 4 to get 3.
-1=\frac{a}{3\left(-1\right)}
Subtract 5 from 4 to get -1.
-1=\frac{a}{-3}
Multiply 3 and -1 to get -3.
\frac{a}{-3}=-1
Swap sides so that all variable terms are on the left hand side.
a=-\left(-3\right)
Multiply both sides by -3.
a=3
Multiply -1 and -3 to get 3.
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}