First, you distribute 5 into (2x-3), as an outcome of 10x-15=5x-10
Secondly, you need to add the 15 to the -10 to get 10x=5x+5
Thirdly, you need to subtract 5x from 10x, you'd get 5x=5
Finally you divide 5x by 5 to get (1)
The answer is B) 1
Any further explaination needed please ask.