Solve for x
x=-3y
Solve for y
y=-\frac{x}{3}
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2x+3y-x=0
Subtract 1x from both sides.
x+3y=0
Combine 2x and -x to get x.
x=-3y
Subtract 3y from both sides. Anything subtracted from zero gives its negation.
3y=1x-2x
Subtract 2x from both sides.
3y=-x
Combine 1x and -2x to get -x.
\frac{3y}{3}=-\frac{x}{3}
Divide both sides by 3.
y=-\frac{x}{3}
Dividing by 3 undoes the multiplication by 3.
Examples
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Linear equation
y = 3x + 4
Arithmetic
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Matrix
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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
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Limits
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