Solve for x
x=\frac{5y}{8}+\frac{1}{4}
Solve for y
y=\frac{8x-2}{5}
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-8x+5y=47-49
Subtract 49 from both sides.
-8x+5y=-2
Subtract 49 from 47 to get -2.
-8x=-2-5y
Subtract 5y from both sides.
-8x=-5y-2
The equation is in standard form.
\frac{-8x}{-8}=\frac{-5y-2}{-8}
Divide both sides by -8.
x=\frac{-5y-2}{-8}
Dividing by -8 undoes the multiplication by -8.
x=\frac{5y}{8}+\frac{1}{4}
Divide -2-5y by -8.
-8x+5y=47-49
Subtract 49 from both sides.
-8x+5y=-2
Subtract 49 from 47 to get -2.
5y=-2+8x
Add 8x to both sides.
5y=8x-2
The equation is in standard form.
\frac{5y}{5}=\frac{8x-2}{5}
Divide both sides by 5.
y=\frac{8x-2}{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}