assume the number is x
two twice the number is 2*x = 2x
and the difference between (two twice the number ) and ( 5 ) = (8)
so , 2x -5 = 8 .... and this is the equation
to get the x value from the equation we need to eliminate the (-5)
so add (+5) to the both sides ,, 2x -5 +5 = 8+5
so, 2x= 13
x= 13/2
