Since no base is stated, assume base 10
remember
loga-logb=log(a/b)
also

translates to

and log(a^z)=zlog(a)
log25x-log5=2 means

translates to

simplies to

translates to

expands to
100=5x
divide both sides by 5
20=x
The answer of the following subtraction is 5
Step-by-step explanation:
As per the question the equation will be

To find the subtraction,
The steps are as follow
=
=1-2 +
[ we took the variables with same power together]
=5
Hope it helps you.
K-3 is the expression for 3 fewer than K