Solve for x
x=5
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7+x=6\times 2
Multiply both sides by 2.
7+x=12
Multiply 6 and 2 to get 12.
x=12-7
Subtract 7 from both sides.
x=5
Subtract 7 from 12 to get 5.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
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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 ) }
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Limits
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