Please help it a quiz

The 2nd one, The 3rd one, and the last one

Step-by-step explanation:

#2 = 4 + -12 is -8 and -2 + -6 is -8

#3 = -19 + 19 is 0 and 5 + -5 is 0

#5 = 17 + -9 is 8 and -9 + 17 is 8

Hope this helps!

Brainliest plz??

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