Solve for x
x=y+1
Solve for y
y=x-1
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-x-2-x=-4-2y
Subtract x from both sides.
-x-x=-4-2y+2
Add 2 to both sides.
-x-x=-2-2y
Add -4 and 2 to get -2.
-2x=-2-2y
Combine -x and -x to get -2x.
-2x=-2y-2
The equation is in standard form.
\frac{-2x}{-2}=\frac{-2y-2}{-2}
Divide both sides by -2.
x=\frac{-2y-2}{-2}
Dividing by -2 undoes the multiplication by -2.
x=y+1
Divide -2-2y by -2.
x-4-2y=-x-2
Swap sides so that all variable terms are on the left hand side.
-4-2y=-x-2-x
Subtract x from both sides.
-2y=-x-2-x+4
Add 4 to both sides.
-2y=-x+2-x
Add -2 and 4 to get 2.
-2y=-2x+2
Combine -x and -x to get -2x.
-2y=2-2x
The equation is in standard form.
\frac{-2y}{-2}=\frac{2-2x}{-2}
Divide both sides by -2.
y=\frac{2-2x}{-2}
Dividing by -2 undoes the multiplication by -2.
y=x-1
Divide 2-2x by -2.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}