Deepak wrote out the steps to his solution of the equation – 3x – 5 + 4x = –(7/4) which step has an incorrect instruction?

i can you answer this question sweetie!

step-by-step explanation:

1/4 because there is 4 grades.

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