Solve the equation for x
dx + b = 9(x - d)

x = (-d - b)/(d - 9)

Step-by-step explanation:

Step 1: Write equation

dx + b = 9(x - d)

Step 2: Solve for x

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.