Question

-4x + 11y =15 when x=2y what is x and y

Answer 1

-4x+11y =15

substitute in x=2y

-4(2y) +11y =15

multiply

-8y +11y =15

combine like terms

3y =15

divide each side by 3

y =5

x=2y

x=2*5

x=10

Answer:x=10

y=5