Solve for x
x=9
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2x-2=x+7
Combine 3x and -x to get 2x.
2x-2-x=7
Subtract x from both sides.
x-2=7
Combine 2x and -x to get x.
x=7+2
Add 2 to both sides.
x=9
Add 7 and 2 to get 9.
Examples
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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
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Limits
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