Solve for x
x=\frac{y-1}{3}
Solve for y
y=3x+1
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-3x-1=-y
Subtract y from both sides. Anything subtracted from zero gives its negation.
-3x=-y+1
Add 1 to both sides.
-3x=1-y
The equation is in standard form.
\frac{-3x}{-3}=\frac{1-y}{-3}
Divide both sides by -3.
x=\frac{1-y}{-3}
Dividing by -3 undoes the multiplication by -3.
x=\frac{y-1}{3}
Divide -y+1 by -3.
y-1=3x
Add 3x to both sides. Anything plus zero gives itself.
y=3x+1
Add 1 to both sides.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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