When solving an equation, Carmen's first step is shown below. Which property justifies Carmen's first step? Original Equation: 3+2? +40 First Step: 2 +2 +4 = 0 subtraction property of equality division property of equality commutative property of multiplication commutative property of addition​

answer:

your answer is: c. 196 7/8 in^3.

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