5c/f=1/r, solve for r, c and f.

c = 1, f = 5, and r = 1

Step-by-step explanation:

5(1)/(5) = 1/(1)

5/5 = 1/1

1 = 1

Step-by-step explanation:

5c = 1

f r

solving for r

5rc = f

r = f

5c

solving for c

if r = f

5c

5rc = f

c = f

5r

solving for f

f = 5cr

step-by-step explanation:

first, eliminate the parenthesis:

3

x

+

2

−

4

x

second, group like terms:

3

x

−

4

x

+

2

third, combine like terms:

(

3

−

4

)

x

+

2

→

−

1

x

+

2

→

−

x

+

2

12cm

the answer is d