Solve for x
x=\frac{1}{5}-y
Solve for y
y=\frac{1}{5}-x
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10x-20+10y=-25+7
Subtract 5 from -20 to get -25.
10x-20+10y=-18
Add -25 and 7 to get -18.
10x+10y=-18+20
Add 20 to both sides.
10x+10y=2
Add -18 and 20 to get 2.
10x=2-10y
Subtract 10y from both sides.
\frac{10x}{10}=\frac{2-10y}{10}
Divide both sides by 10.
x=\frac{2-10y}{10}
Dividing by 10 undoes the multiplication by 10.
x=\frac{1}{5}-y
Divide 2-10y by 10.
10x-20+10y=-25+7
Subtract 5 from -20 to get -25.
10x-20+10y=-18
Add -25 and 7 to get -18.
-20+10y=-18-10x
Subtract 10x from both sides.
10y=-18-10x+20
Add 20 to both sides.
10y=2-10x
Add -18 and 20 to get 2.
\frac{10y}{10}=\frac{2-10x}{10}
Divide both sides by 10.
y=\frac{2-10x}{10}
Dividing by 10 undoes the multiplication by 10.
y=\frac{1}{5}-x
Divide 2-10x by 10.
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}