Question

Find out x and y. y = 2x。 x = 2y - 9​

Answer 1

x = 3

y = 6

Explanation:

y = 2x

x = 2y - 9

=> x = 2(2x) - 9

=> x = 4x - 9

=> 9 = 4x - x

=> 9 = 3x

=> 3x = 9

=> x = 9/3

=> x = 3

y = 2x

=> y = 2(3)

=> y = 6