Solve for x
x=2-y
Solve for y
y=2-x
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2x=4-2y
Subtract 2y from both sides.
\frac{2x}{2}=\frac{4-2y}{2}
Divide both sides by 2.
x=\frac{4-2y}{2}
Dividing by 2 undoes the multiplication by 2.
x=2-y
Divide 4-2y by 2.
2y=4-2x
Subtract 2x from both sides.
\frac{2y}{2}=\frac{4-2x}{2}
Divide both sides by 2.
y=\frac{4-2x}{2}
Dividing by 2 undoes the multiplication by 2.
y=2-x
Divide 4-2x by 2.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Matrix
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
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\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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