Solve for x
x=3
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5x-4-2x=5
Subtract 2x from both sides.
3x-4=5
Combine 5x and -2x to get 3x.
3x=5+4
Add 4 to both sides.
3x=9
Add 5 and 4 to get 9.
x=\frac{9}{3}
Divide both sides by 3.
x=3
Divide 9 by 3 to get 3.
Examples
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y = 3x + 4
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Matrix
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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
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Limits
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