Solve for y
y=\frac{5x}{2}
x\neq 0
Solve for x
x=\frac{2y}{5}
y\neq 0
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\left(\frac{y}{x}-7\right)\times 2x+x\times 7+x\times 6=x\times 7+x\left(-3\right)
Multiply both sides of the equation by x.
\left(\frac{y}{x}-\frac{7x}{x}\right)\times 2x+x\times 7+x\times 6=x\times 7+x\left(-3\right)
To add or subtract expressions, expand them to make their denominators the same. Multiply 7 times \frac{x}{x}.
\frac{y-7x}{x}\times 2x+x\times 7+x\times 6=x\times 7+x\left(-3\right)
Since \frac{y}{x} and \frac{7x}{x} have the same denominator, subtract them by subtracting their numerators.
\frac{\left(y-7x\right)\times 2}{x}x+x\times 7+x\times 6=x\times 7+x\left(-3\right)
Express \frac{y-7x}{x}\times 2 as a single fraction.
\frac{\left(y-7x\right)\times 2x}{x}+x\times 7+x\times 6=x\times 7+x\left(-3\right)
Express \frac{\left(y-7x\right)\times 2}{x}x as a single fraction.
2\left(-7x+y\right)+x\times 7+x\times 6=x\times 7+x\left(-3\right)
Cancel out x in both numerator and denominator.
-14x+2y+x\times 7+x\times 6=x\times 7+x\left(-3\right)
Use the distributive property to multiply 2 by -7x+y.
-7x+2y+x\times 6=x\times 7+x\left(-3\right)
Combine -14x and x\times 7 to get -7x.
-x+2y=x\times 7+x\left(-3\right)
Combine -7x and x\times 6 to get -x.
-x+2y=4x
Combine x\times 7 and x\left(-3\right) to get 4x.
2y=4x+x
Add x to both sides.
2y=5x
Combine 4x and x to get 5x.
\frac{2y}{2}=\frac{5x}{2}
Divide both sides by 2.
y=\frac{5x}{2}
Dividing by 2 undoes the multiplication 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}