Answer:
d=11
Explanation:
So, you have to get numbers without variables attachted to it together on one side of the equation. Hence, you have to transfer "-5" to after 17. Once it's transfered, you switch the negative sign to a positive.
2d=17+5
Add 17 and 5, 22.
2d=22
Divide 22 by 2 to get d by itself.
d=11