Solve for x y=4x y=20

$y = 4 x$ $y = 20$

Step 1

Replace all occurrences of $y$ with $20$ in each equation.

Replace all occurrences of $y$ in $y = 4 x$ with $20$ .

$20 = 4 x$

$y = 20$

Simplify the left side.

Remove parentheses.

$20 = 4 x$

$y = 20$

$20 = 4 x$

$y = 20$

$20 = 4 x$

$y = 20$

Step 2

The simplified system is the arbitrary solution of the original system of equations.

$x = 5$

$y = 20$