Solve for x
x=\frac{4y}{7}
Solve for y
y=\frac{7x}{4}
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\frac{5\left(y-x\right)}{15}+\frac{3\left(2x+y\right)}{15}=x
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 3 and 5 is 15. Multiply \frac{y-x}{3} times \frac{5}{5}. Multiply \frac{2x+y}{5} times \frac{3}{3}.
\frac{5\left(y-x\right)+3\left(2x+y\right)}{15}=x
Since \frac{5\left(y-x\right)}{15} and \frac{3\left(2x+y\right)}{15} have the same denominator, add them by adding their numerators.
\frac{5y-5x+6x+3y}{15}=x
Do the multiplications in 5\left(y-x\right)+3\left(2x+y\right).
\frac{x+8y}{15}=x
Combine like terms in 5y-5x+6x+3y.
\frac{1}{15}x+\frac{8}{15}y=x
Divide each term of x+8y by 15 to get \frac{1}{15}x+\frac{8}{15}y.
\frac{1}{15}x+\frac{8}{15}y-x=0
Subtract x from both sides.
-\frac{14}{15}x+\frac{8}{15}y=0
Combine \frac{1}{15}x and -x to get -\frac{14}{15}x.
-\frac{14}{15}x=-\frac{8}{15}y
Subtract \frac{8}{15}y from both sides. Anything subtracted from zero gives its negation.
-\frac{14}{15}x=-\frac{8y}{15}
The equation is in standard form.
\frac{-\frac{14}{15}x}{-\frac{14}{15}}=-\frac{\frac{8y}{15}}{-\frac{14}{15}}
Divide both sides of the equation by -\frac{14}{15}, which is the same as multiplying both sides by the reciprocal of the fraction.
x=-\frac{\frac{8y}{15}}{-\frac{14}{15}}
Dividing by -\frac{14}{15} undoes the multiplication by -\frac{14}{15}.
x=\frac{4y}{7}
Divide -\frac{8y}{15} by -\frac{14}{15} by multiplying -\frac{8y}{15} by the reciprocal of -\frac{14}{15}.
\frac{5\left(y-x\right)}{15}+\frac{3\left(2x+y\right)}{15}=x
To add or subtract expressions, expand them to make their denominators the same. Least common multiple of 3 and 5 is 15. Multiply \frac{y-x}{3} times \frac{5}{5}. Multiply \frac{2x+y}{5} times \frac{3}{3}.
\frac{5\left(y-x\right)+3\left(2x+y\right)}{15}=x
Since \frac{5\left(y-x\right)}{15} and \frac{3\left(2x+y\right)}{15} have the same denominator, add them by adding their numerators.
\frac{5y-5x+6x+3y}{15}=x
Do the multiplications in 5\left(y-x\right)+3\left(2x+y\right).
\frac{x+8y}{15}=x
Combine like terms in 5y-5x+6x+3y.
\frac{1}{15}x+\frac{8}{15}y=x
Divide each term of x+8y by 15 to get \frac{1}{15}x+\frac{8}{15}y.
\frac{8}{15}y=x-\frac{1}{15}x
Subtract \frac{1}{15}x from both sides.
\frac{8}{15}y=\frac{14}{15}x
Combine x and -\frac{1}{15}x to get \frac{14}{15}x.
\frac{8}{15}y=\frac{14x}{15}
The equation is in standard form.
\frac{\frac{8}{15}y}{\frac{8}{15}}=\frac{14x}{\frac{8}{15}\times 15}
Divide both sides of the equation by \frac{8}{15}, which is the same as multiplying both sides by the reciprocal of the fraction.
y=\frac{14x}{\frac{8}{15}\times 15}
Dividing by \frac{8}{15} undoes the multiplication by \frac{8}{15}.
y=\frac{7x}{4}
Divide \frac{14x}{15} by \frac{8}{15} by multiplying \frac{14x}{15} by the reciprocal of \frac{8}{15}.
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}