Answer: (x = \frac{85 + 2d}{2})
(d = x - 42.5)
Step-by-step explanation:
Start by isolating the terms with (x) and (d): [ 2x - 2d = 85 ]
Add (2d) to both sides of the equation: [ 2x = 85 + 2d ]
Divide both sides of the equation by 2: [ x = \frac{85 + 2d}{2} ]
Now let’s solve for (d): [ 2x - 2d = 85 ] [ 2d = 2x - 85 ] [ d = x - 42.5 ]
Therefore, the solutions are:
(x = \frac{85 + 2d}{2})
(d = x - 42.5)
