Solve for x
x=-\frac{y}{3}+1
Solve for y
y=3-3x
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y=-3x+3
Use the distributive property to multiply -3 by x-1.
-3x+3=y
Swap sides so that all variable terms are on the left hand side.
-3x=y-3
Subtract 3 from both sides.
\frac{-3x}{-3}=\frac{y-3}{-3}
Divide both sides by -3.
x=\frac{y-3}{-3}
Dividing by -3 undoes the multiplication by -3.
x=-\frac{y}{3}+1
Divide y-3 by -3.
y=-3x+3
Use the distributive property to multiply -3 by x-1.
Examples
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y = 3x + 4
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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