Solve for x
x = \frac{10}{3} = 3\frac{1}{3} \approx 3.333333333
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-2=7x-2\left(6+2x\right)
Add -4 and 2 to get -2.
-2=7x-12-4x
Use the distributive property to multiply -2 by 6+2x.
-2=3x-12
Combine 7x and -4x to get 3x.
3x-12=-2
Swap sides so that all variable terms are on the left hand side.
3x=-2+12
Add 12 to both sides.
3x=10
Add -2 and 12 to get 10.
x=\frac{10}{3}
Divide both sides by 3.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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