BVAALAEKBNSSZUYNACLBVAHSNAUB

CODE SO FAR: THEE T T E T ??

this was an exercise in class about Caesars method. started by comparing to frequency letters in english => B=T and A=E then formed two equations.

A: 1=5a + bmod(26)
B: 2=20a +bmod(26) Because B is second letter and T is 20th letter.

gcd (26,15) = 1 and for extended euclidean alg i worked out a=7 and b=8

15a + 26b=1

Great! But i dont have a clue what to do now anyone can help????? I know its a shift of ai +b and e.t.c and ive read into stuff but im still lost. i feel like im so close but being an idiot.thanks