Solve for x
x=-4
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2-\frac{1}{3}x-\frac{1}{3}\left(-2\right)=4
Use the distributive property to multiply -\frac{1}{3} by x-2.
2-\frac{1}{3}x+\frac{-\left(-2\right)}{3}=4
Express -\frac{1}{3}\left(-2\right) as a single fraction.
2-\frac{1}{3}x+\frac{2}{3}=4
Multiply -1 and -2 to get 2.
\frac{6}{3}-\frac{1}{3}x+\frac{2}{3}=4
Convert 2 to fraction \frac{6}{3}.
\frac{6+2}{3}-\frac{1}{3}x=4
Since \frac{6}{3} and \frac{2}{3} have the same denominator, add them by adding their numerators.
\frac{8}{3}-\frac{1}{3}x=4
Add 6 and 2 to get 8.
-\frac{1}{3}x=4-\frac{8}{3}
Subtract \frac{8}{3} from both sides.
-\frac{1}{3}x=\frac{12}{3}-\frac{8}{3}
Convert 4 to fraction \frac{12}{3}.
-\frac{1}{3}x=\frac{12-8}{3}
Since \frac{12}{3} and \frac{8}{3} have the same denominator, subtract them by subtracting their numerators.
-\frac{1}{3}x=\frac{4}{3}
Subtract 8 from 12 to get 4.
x=\frac{4}{3}\left(-3\right)
Multiply both sides by -3, the reciprocal of -\frac{1}{3}.
x=\frac{4\left(-3\right)}{3}
Express \frac{4}{3}\left(-3\right) as a single fraction.
x=\frac{-12}{3}
Multiply 4 and -3 to get -12.
x=-4
Divide -12 by 3 to get -4.
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y = 3x + 4
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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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}