Solve for x
x=-4
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Linear Equation
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\frac { 2 } { 3 } x + \frac { 6 } { 3 } = - \frac { 2 } { 3 }
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\frac{2}{3}x+2=-\frac{2}{3}
Divide 6 by 3 to get 2.
\frac{2}{3}x=-\frac{2}{3}-2
Subtract 2 from both sides.
\frac{2}{3}x=-\frac{2}{3}-\frac{6}{3}
Convert 2 to fraction \frac{6}{3}.
\frac{2}{3}x=\frac{-2-6}{3}
Since -\frac{2}{3} and \frac{6}{3} have the same denominator, subtract them by subtracting their numerators.
\frac{2}{3}x=-\frac{8}{3}
Subtract 6 from -2 to get -8.
x=-\frac{8}{3}\times \frac{3}{2}
Multiply both sides by \frac{3}{2}, the reciprocal of \frac{2}{3}.
x=\frac{-8\times 3}{3\times 2}
Multiply -\frac{8}{3} times \frac{3}{2} by multiplying numerator times numerator and denominator times denominator.
x=\frac{-8}{2}
Cancel out 3 in both numerator and denominator.
x=-4
Divide -8 by 2 to get -4.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}