Solve for x
x=-\frac{5y}{8}+\frac{1}{4}
Solve for y
y=\frac{2-8x}{5}
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9x-6+5y-x=-4
Subtract x from both sides.
8x-6+5y=-4
Combine 9x and -x to get 8x.
8x+5y=-4+6
Add 6 to both sides.
8x+5y=2
Add -4 and 6 to get 2.
8x=2-5y
Subtract 5y from both sides.
\frac{8x}{8}=\frac{2-5y}{8}
Divide both sides by 8.
x=\frac{2-5y}{8}
Dividing by 8 undoes the multiplication by 8.
x=-\frac{5y}{8}+\frac{1}{4}
Divide 2-5y by 8.
-6+5y=x-4-9x
Subtract 9x from both sides.
-6+5y=-8x-4
Combine x and -9x to get -8x.
5y=-8x-4+6
Add 6 to both sides.
5y=-8x+2
Add -4 and 6 to get 2.
5y=2-8x
The equation is in standard form.
\frac{5y}{5}=\frac{2-8x}{5}
Divide both sides by 5.
y=\frac{2-8x}{5}
Dividing by 5 undoes the multiplication by 5.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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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}