Solve for x
x=5
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100=20x
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by x.
20x=100
Swap sides so that all variable terms are on the left hand side.
x=\frac{100}{20}
Divide both sides by 20.
x=5
Divide 100 by 20 to get 5.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
Arithmetic
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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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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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