Solve for x
x=-y-4
Solve for y
y=-\left(x+4\right)
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y=-x-4
Combine \frac{2}{3}x and -\frac{5}{3}x to get -x.
-x-4=y
Swap sides so that all variable terms are on the left hand side.
-x=y+4
Add 4 to both sides.
\frac{-x}{-1}=\frac{y+4}{-1}
Divide both sides by -1.
x=\frac{y+4}{-1}
Dividing by -1 undoes the multiplication by -1.
x=-\left(y+4\right)
Divide y+4 by -1.
y=-x-4
Combine \frac{2}{3}x and -\frac{5}{3}x to get -x.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
Arithmetic
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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
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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