Solve for x
x=\frac{y+7}{5}
Solve for y
y=5x-7
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y-3=5x-10
Use the distributive property to multiply 5 by x-2.
5x-10=y-3
Swap sides so that all variable terms are on the left hand side.
5x=y-3+10
Add 10 to both sides.
5x=y+7
Add -3 and 10 to get 7.
\frac{5x}{5}=\frac{y+7}{5}
Divide both sides by 5.
x=\frac{y+7}{5}
Dividing by 5 undoes the multiplication by 5.
y-3=5x-10
Use the distributive property to multiply 5 by x-2.
y=5x-10+3
Add 3 to both sides.
y=5x-7
Add -10 and 3 to get -7.
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}