Answer
$d = 7.5$
Work Step by Step
$5.5 = -2 + d$
In order to solve this algebraic expression, we need to isolate the variable $d$ and join the constants together on the L.H.S.
We therefore eliminate the constants from the R.H.S by adding $2$ to both sides of the equation as shown below:
$5.5 + 2 = -2 + d + 2$
Simplifying this we have:
$7.5 = d$
Rearranging it, we have:
$d = 7.5$
This shows that the equation has a possible solution at the point $d = 7.5$
Testing the variable, we replace for the variable $d$ with $7.5$ in the original equation as shown below:
$5.5 = -2 + d$
$5.5 = -2 + 7.5$
Simplifying, we have:
$5.5 = 5.5$
Therefore, the statement that $d = 7.5$ is proven to be true.
