Question #5b0f3

1 Answer
Nov 14, 2016

Answer:

See explanation below

Explanation:

#a-=b [mod n] #
a and b are congruent modulo n
#(a-b)# is a multiple of n (n divides (a-b))

#3x-=1 [mod 26] #
3x and 1 are congruent modulo 26
#(3x-1)# is a multiple of 26

#3x-1=26k#
where ##
k is an integer

#3x=26k+1#