Question

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Answer 1

-4x+11y=15

x=2y

-4*2y+11y=15

x=2y

-8y+11y=15

x=2y

3y=15 //3

x=2y

y=5

x=2*5

y=5

x=10

x=10

y=5

Answer 2

x = 10

y = 5

Explanation:

-4x + 11y = 15 and x = 2y

-4 × (2y) + 11y = 15

-8y + 11y = 15

3y = 15

y = 5 and since x = 2y the value of x would be 10