Answer:
1) x = -3 and y = -4
2) x = 1/4 and y = -2
Explanation:
for #2 you can distribute a -2 among the terms in the top equation to get:
-8x - 6y = 10 now add this to the 2nd equation to get:
-2y = 4
y = -2
substitute -2 for 'y' to get 'x' as follows:
8x + 4(-2) = -6
8x + (-8) = -6
8x = 2
x = 2/8 or 1/4
for #1 I multiplied each side by 3 to remove the denominators in each equation to get:
3y = x - 9
3y = -2x - 18
now solve for 'x': x-9 = -2x-18 because each expression equals '3y'
3x-9 = -18
3x = -9
x = -3
plug -3 for 'x' into this equation to solve for 'y'': 3y = x-9
3y = -3 - 9
3y = -12
y = -4