Solve for x
x=-10
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Linear Equation
5 problems similar to:
\frac { 5 } { x } = \frac { 5 } { 2 x } - \frac { 1 } { 4 }
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4\times 5=2\times 5+4x\left(-\frac{1}{4}\right)
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 4x, the least common multiple of x,2x,4.
20=2\times 5+4x\left(-\frac{1}{4}\right)
Multiply 4 and 5 to get 20.
20=10+4x\left(-\frac{1}{4}\right)
Multiply 2 and 5 to get 10.
20=10-x
Multiply 4 and -\frac{1}{4} to get -1.
10-x=20
Swap sides so that all variable terms are on the left hand side.
-x=20-10
Subtract 10 from both sides.
-x=10
Subtract 10 from 20 to get 10.
x=-10
Multiply both sides by -1.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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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
\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}