Solve for x
x=\frac{11-5y}{4}
Solve for y
y=\frac{11-4x}{5}
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4x-11=-5y
Subtract 5y from both sides. Anything subtracted from zero gives its negation.
4x=-5y+11
Add 11 to both sides.
4x=11-5y
The equation is in standard form.
\frac{4x}{4}=\frac{11-5y}{4}
Divide both sides by 4.
x=\frac{11-5y}{4}
Dividing by 4 undoes the multiplication by 4.
5y-11=-4x
Subtract 4x from both sides. Anything subtracted from zero gives its negation.
5y=-4x+11
Add 11 to both sides.
5y=11-4x
The equation is in standard form.
\frac{5y}{5}=\frac{11-4x}{5}
Divide both sides by 5.
y=\frac{11-4x}{5}
Dividing by 5 undoes the multiplication by 5.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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