Solve for x
x=2
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7x-2-5x=2
Subtract 5x from both sides.
2x-2=2
Combine 7x and -5x to get 2x.
2x=2+2
Add 2 to both sides.
2x=4
Add 2 and 2 to get 4.
x=\frac{4}{2}
Divide both sides by 2.
x=2
Divide 4 by 2 to get 2.
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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