Solve for y
y=-\frac{x}{2}+4
Solve for x
x=8-2y
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2y=8-x
Subtract x from both sides.
\frac{2y}{2}=\frac{8-x}{2}
Divide both sides by 2.
y=\frac{8-x}{2}
Dividing by 2 undoes the multiplication by 2.
y=-\frac{x}{2}+4
Divide 8-x by 2.
x=8-2y
Subtract 2y from both sides.
Examples
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y = 3x + 4
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Matrix
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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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