Solve for x
x = \frac{9}{2} = 4\frac{1}{2} = 4.5
Solve for y
y = -\frac{9}{2} = -4\frac{1}{2} = -4.5
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-2x=3y-9-5y
Subtract 5y from both sides.
-2x=-2y-9
Combine 3y and -5y to get -2y.
\frac{-2x}{-2}=\frac{-2y-9}{-2}
Divide both sides by -2.
x=\frac{-2y-9}{-2}
Dividing by -2 undoes the multiplication by -2.
x=y+\frac{9}{2}
Divide -2y-9 by -2.
-2x+5y-3y=-9
Subtract 3y from both sides.
-2x+2y=-9
Combine 5y and -3y to get 2y.
2y=-9+2x
Add 2x to both sides.
2y=2x-9
The equation is in standard form.
\frac{2y}{2}=\frac{2x-9}{2}
Divide both sides by 2.
y=\frac{2x-9}{2}
Dividing by 2 undoes the multiplication by 2.
y=x-\frac{9}{2}
Divide -9+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}