Question

Can somebody help me? Preferably with working out if possible

Answer 1

d=9

Explanation:

First we can do same to both side by adding 2 to both sides:

1=1/3d-2

+2 +2

--------------

3 = 1/3d

Then to get the d on its own, we multiply each side by 3

3=1/3d

*3 *3

---------

9=d

Our final answer is 9

Answer 2

d = 9

Explanation:

Given

1 =
`(1)/(3)` d - 2 ( multiply through by 3 to clear the fraction )

3 = d - 6 ( add 6 to both sides )

9 = d