You can
put this solution on YOUR website! 255-x = 1
Since we know that
[ANY NUMBER*][ZERO POWER] = 1 <--[see footnote at the bottom]
then
250 = 1
and since no other power will give 1, then
it must be true that the exponent in 255-x = 1
must equal 0. The exponent is 5-x, so we put "= 0" after
it and solve:
5-x = 0
You solve for x.
Edwin
*there is one exception to this rule, 00 is not defined.