The proportion can be written as:
(2x + 5)/(3) = (x - 5)/(4)
Multiplying both sides by 12 to eliminate the fractions, we get:
4(2x + 5) = 3(x - 5)
Expanding the brackets, we get:
8x + 20 = 3x - 15
Subtracting 3x and 20 from both sides, we get:
5x = -35
Dividing both sides by 5, we get:
x = -7
Therefore, the solution to the proportion is x = -7.
So, the correct option is A) -7.