Question

If d =3+4r what is the value of r when r=5

Answer 1

23

Explanation:

if r = t

= 3+4r

= 3+4×5

= 3+20

= 23

hence proved

Answer 2

Substituting r into the equation, we have:

d = 3+4r

d = 3+4(5)

d = 3+20

d = 23.

So, d=23 is our answer.

Also, I assume you meant, "What is the value of d when r=5," not, "What is the value of r when d is 5".