Question

d + 2.4 = 0.9

Explanation:

Step1: Isolate variable d

Subtract 2.4 from both sides.
$d + 2.4 - 2.4 = 0.9 - 2.4$

Step2: Calculate the result

Simplify both sides of the equation.
$d = 0.9 - 2.4$

Answer:

$d = -1.5$