Solve for x and y

need help fast.

(x, y) = (4, -8)

Step-by-step explanation:

2x - 2y = 24 4x - 4y = 48

4x + 7y = -40

Subtracting the two equations from each other, we get:

(4x + 7y) - (4x - 4y) = -40 - 48

11y = -88

y = -8.

Then, 2x - 2*(-8) = 24. So, 2x + 16 = 24 2x = 8x = 4

step-by-step explanation:

; fx

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15