Answer:{x,y}={-1,-4}
Explanation:
[2] 8x = 4y + 8
[2] x = y/2 + 1
// Plug this in for variable x in equation [1]
[1] 10•(y /2+1) - 9y = 26
[1] - 4y = 16
// Solve equation [1] for the variable y
[1] 4y = - 16
[1] y = - 4
// By now we know this much :
x = y/2+1
y = -4
// Use the y value to solve for x
x = (/2)(-4)+1 = -1