Solve 5x=y,2y=40,x=?

Evaluate

⎩ ⎨ ⎧ 5 x = y 2 y = 40 x = ?

Solve the equation for y

More Steps

⎩ ⎨ ⎧ 5 x = y y = 20 x = ?

Substitute the given value of y into the equation {5 x = y x = ?

{5 x = 20 x = ?

Solve the equation for x

More Steps

{x = 4 x = ?

Substitute the given value of x into the equation x = ?

4 = ?

Swap the sides of the equation

? = 4

Calculate

⎩ ⎨ ⎧ ? = 4 x = 4 y = 20

Check the solution

More Steps

⎩ ⎨ ⎧ ? = 4 x = 4 y = 20

Solution

(?, x, y) = (4, 4, 20)

Solve the system of equations